According to Au7o's analysis of 5,825+ owner reports, the 2021 Ford Transit has 18 documented known issues, with 8 rated critical. The most serious are 3.5L EcoBoost Twin Turbocharger Failure ($1,200-$3,500 repair), Fuel Injector Failure and Rough Running (EcoBlue Diesel) ($300-$2,500 repair), Front Brake Caliper Sticking / Premature Pad and Rotor Wear ($150-$900 repair), PCM/ECM Software Calibration Causing Stall or No-Start After Refueling, 10R80 (10-speed) Harsh/Delayed Shifts and Shudder (Software/Valve Body Related) ($250-$3,200 repair), Rear Leaf Spring U-Bolt and Spring Pack Fatigue / Breakage ($350-$1,200 repair), NOx Sensor / SCR DEF System Faults Causing Reduced Power (2.0L EcoBlue Diesel) ($350-$1,800 repair) and Turbo Wastegate Actuator Sticking Causing Limp Mode ($200-$2,500 repair). at .
Ford Motor Company (Ford) is recalling certain 2022-2023 Transit vehicles. The heating, ventilation, and air-conditioning (HVAC) system's controls, including those for defog and defrost, may become inoperative.
Campaign #22V79100020/10/2022
FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY
Ford Motor Company (Ford) is recalling certain 2023 Transit vehicles. The fuel tank grade vent valve may not be properly welded to the fuel tank shell, which can result in a fuel leak.
Campaign #23V07100010/02/2023
VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM
Ford Motor Company (Ford) is recalling certain 2023 Transit vehicles equipped with the Special Vehicle Operations Accessory Service Kit #1 or #2 with a High Specification Vehicle Interface Connector. When the accessory kit is installed, the auxiliary wire harness will disable the heating, air-conditioning, and ventilation (HVAC) including the defrost and defog systems. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 103, "Windshield Defrosting and Defogging Systems."
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According to Au7o's analysis of 5,825+ owner reports, the 2021 Ford Transit has 18 documented issues. The most frequently reported are: 3.5L EcoBoost Twin Turbocharger Failure, Fuel Injector Failure and Rough Running (EcoBlue Diesel), Front Brake Caliper Sticking / Premature Pad and Rotor Wear. Of these, 8 are rated critical and should be addressed promptly.
Is the Ford Transit reliable?
The 2021 Ford Transit has 18 known issues documented across 5,825+ owner reports. 8 issues are rated critical: 3.5L EcoBoost Twin Turbocharger Failure and Fuel Injector Failure and Rough Running (EcoBlue Diesel) and Front Brake Caliper Sticking / Premature Pad and Rotor Wear and PCM/ECM Software Calibration Causing Stall or No-Start After Refueling and 10R80 (10-speed) Harsh/Delayed Shifts and Shudder (Software/Valve Body Related) and Rear Leaf Spring U-Bolt and Spring Pack Fatigue / Breakage and NOx Sensor / SCR DEF System Faults Causing Reduced Power (2.0L EcoBlue Diesel) and Turbo Wastegate Actuator Sticking Causing Limp Mode. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
How much does it cost to fix common Ford Transit problems?
Repair costs for known Ford Transit issues range from $50 to $3,500, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, 3.5L EcoBoost Twin Turbocharger Failure, typically costs $1,200-$3,500 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
What is the 2015-2024 Ford Transit 3.5L EcoBoost Twin Turbocharger Failure?
The Ford Transit 350/350 HD with the 3.5L EcoBoost twin-turbocharged V6 experiences turbocharger failures from inadequate lubrication, carbon buildup in the turbo housings, wastegate actuator failure, and turbo bearing wear. OMS AutoParts and Autodoc document common Transit turbo… Repairs typically run $1,200-$3,500. Severity: high.
What is the 2017-2023 Ford Transit Fuel Injector Failure and Rough Running (EcoBlue Diesel)?
Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.
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When Issues Typically Appear
10R80 (10-speed) Harsh/Delayed Shifts and Shudder (Software/Valve Body Related)
5K-60K
PCM/ECM Software Calibration Causing Stall or No-Start After Refueling
15K-80K
Front Brake Caliper Sticking / Premature Pad and Rotor Wear
20K-80K
NOx Sensor / SCR DEF System Faults Causing Reduced Power (2.0L EcoBlue Diesel)
20K-120K
Instrument Cluster / Speedometer Erratic Readings and Gauge Dropout
20K-90K
Sliding Door Track/Roller Wear Causing Binding, Noise, or Door Not Closing
Rear HVAC Line/Expansion Valve Leaks (Dual A/C) Causing Loss of Refrigerant
30K-120K
3.5L EcoBoost Twin Turbocharger Failure
30K-46K
Fuel Injector Failure and Rough Running (EcoBlue Diesel)
40K-60K
Front Suspension Radius Arm Bushing Premature Wear and Cracking
40K-120K
Alternator Premature Failure and Voltage Regulator Issues
50K-80K
050K100K150K200K mi
Community reported
1,200 owners
On the 2015-2024 Ford Transit EcoBoost 3.5, the Ford Transit 350/350 HD with the 3.5L EcoBoost twin-turbocharged V6 experiences turbocharger failures from inadequate lubrication, carbon buildup in the turbo housings, wastegate actuator failure, and turbo bearing wear. OMS AutoParts and Autodoc document common Transit turbo problems including loss of power, turbo lag, unusual whistling/whining/grinding noises, and excessive smoke. The commercial use of Transit vans (frequent stop-and-go, high idle hours, heavy loads) accelerates turbo wear beyond what passenger vehicle applications typically experience. FordTransitUSAForum.com documents a case of turbo and manifold failure at 38,000 miles on a 3.5L EcoBoost Transit 350. RepairPal estimates turbocharger assembly replacement between $1,650 and $2,210 depending on the Transit model variant.
Whistling, whining, or grinding noise from turbo area
Excessive blue or black smoke from exhaust
Check engine light with boost-related codes
Oil leak from turbo drain or feed lines
Burning oil smell from engine bay
Reduced fuel economy
How to Fix
For wastegate actuator failures (most common turbo issue): replacement of the actuator alone ($200-400) may resolve boost control issues without full turbo replacement. For internal turbo bearing failure or impeller damage, complete turbo replacement is required. RepairPal estimates $1,650-2,210 for turbo assembly replacement. For Transit commercial vehicles, change oil every 5,000 miles (not the factory 10k interval) and allow 30-60 seconds of idle time before shutdown after sustained driving to allow turbo bearing oil to circulate. Never shut off a hot turbocharged engine immediately after towing or hard driving.
Owner tips & cautions
TipFor commercial Transit vans with the 3.5L EcoBoost: change oil every 5,000 miles maximum, NOT the 10,000 mile factory interval. Commercial stop-and-go driving with heavy loads degrades oil faster than the oil life monitor predicts. Clean oil is the #1 factor in turbo longevity.
WarningNever shut off a turbocharged Transit immediately after towing, highway driving, or heavy load. Let it idle for 30-60 seconds to allow oil to circulate through the turbo bearings as they cool. Immediate shutdown allows residual heat to "coke" the oil in the turbo bearings, accelerating wear.
Medium Confidence1,200 reportsLast reported by owners Feb 2026Reviewed Feb 2026
On the 2015-2022 Ford Transit 3.5L EcoBoost V6, the 3.5L EcoBoost twin-turbo Transit models experience wastegate actuator sticking, particularly on the passenger-side turbo. Carbon buildup and heat cycling cause the wastegate pivot to seize, resulting in either overboosting (wastegate stuck closed) or underboosting (stuck open). Overboosting triggers an immediate limp mode with reduced power. The issue is more prevalent in Transit vans used for towing or heavy cargo loads that keep the turbos under sustained high heat.
First attempt: remove the wastegate actuator arm and clean the pivot with PB Blaster, then exercise it through full range of motion. Apply high-temp anti-seize to the pivot. If the pivot is corroded beyond cleaning, replace the wastegate actuator assembly ($200-400 per side). In severe cases, the entire turbocharger must be replaced. Preventive maintenance: exercise the wastegate linkage every oil change and avoid extended idle periods that promote carbon buildup.
Owner tips & cautions
TipBefore spending $2,000+ on new turbos, try the cleaning method first. Remove the wastegate actuator vacuum line, spray the pivot with PB Blaster, and work the arm back and forth. 70% of the time this fixes the limp mode issue for another 20-30k miles.
On the 2020-2023 Ford Transit, the 2.0L EcoBlue diesel Transit has a documented pattern of boost pressure sensor and manifold absolute pressure (MAP) sensor failures, causing incorrect boost readings fed to the ECM. When the sensor fails or reads out of range, the ECM defaults to a conservative fueling map, reducing power significantly and triggering a check engine light. This issue is noted in multiple European market TSBs and has been replicated in North American Transit owners' forums with the same engine.
Noticeable reduction in engine power or sluggish acceleration
Check engine light with boost-related fault codes
Excessive black smoke from exhaust under load
Turbo appears to not build boost pressure
Poor fuel economy compared to baseline
How to Fix
Replace the boost pressure/MAP sensor located on the intake manifold. Ford part number for the 2.0L EcoBlue MAP sensor is approximately 2 235 233 (or Motorcraft DY-1297). Clearing the fault and re-testing boost response is required after replacement. ECM recalibration via Ford FDRS may be needed if a learned adaptation table has been skewed by the faulty sensor data.
On the 2015-2024 Ford Transit, the Ford Transit aluminum oil pan is prone to drain plug thread stripping, especially in vehicles serviced at quick-lube shops or with frequent oil changes. The aluminum pan threads are softer than the steel drain plug, and over-torquing or cross-threading during routine oil changes permanently damages the threads. Once stripped, the drain plug leaks oil or falls out entirely, potentially causing catastrophic engine damage from oil starvation.
Oil dripping from drain plug area after oil change
Drain plug feels loose or wobbles
Oil spots on ground under engine
Low oil pressure warning after recent service
Drain plug cannot be tightened properly
How to Fix
For minor thread damage: install a Time-Sert or Helicoil thread repair insert (M14x1.5 for most Transit models). This is a permanent repair that is actually stronger than the original threads. For severe damage: replace the oil pan ($200-400 for the pan plus 2-3 hours labor). Prevent recurrence by always hand-threading the drain plug first, then torquing to exactly 20 ft-lbs (not more). Use a new crush washer at every oil change.
Owner tips & cautions
WarningNEVER let a quick-lube shop use an impact gun on your Transit oil drain plug. The aluminum pan threads strip easily. Hand-thread the plug in, then torque to exactly 20 ft-lbs. If a shop stripped your threads, a Time-Sert M14x1.5 repair kit ($35) creates threads stronger than original.
On the 2017-2023 Ford Transit, the 2017-2023 Ford Transit with the 2.0L EcoBlue diesel engine (available in some markets) and the 3.5L EcoBoost V6 experience fuel injector failures causing rough running, misfires, poor idle, reduced performance, and excessive smoke on cold start. Parkers UK documents an official Ford service action for Transit EcoBlue diesel injector failures traced to a quality issue with Continental-supplied injectors where an internal surface coating comes unstuck, blocking the injector. FordTransitUSAForum.com documents injector failure on 3.5L EcoBoost Transit models as well, where direct injection fuel deposits cause injector spray pattern degradation. RepairPal estimates individual injector replacement between $266 and $627 depending on Transit model, but multiple injectors often need replacement simultaneously, and contaminated fuel systems can cost significantly more.
For Transit 3.5L EcoBoost: replace failed injectors ($100-200 per injector, 3-4 hours labor). Consider replacing all 6 injectors if the vehicle has over 100k miles - if one has failed, others are likely close behind. For EcoBlue diesel: Ford issued a service action for Continental injector failures - check with dealer for coverage. Use only Top Tier gasoline and change fuel filters per schedule. Professional fuel system cleaning every 50,000 miles can extend injector life.
Owner tips & cautions
TipWhen replacing injectors on the 3.5L EcoBoost Transit, consider replacing all 6 at once if the vehicle has over 100k miles. Individual injectors are $100-200 each, and if one has failed from deposit buildup, the others are likely degraded too. It saves labor to do them all at once.
Medium Confidence950 reportsLast reported by owners Feb 2026Reviewed Feb 2026
Community reported
180 owners
On the 2015-2021 Ford Transit, ford Transit owners, particularly those with the 3.5L EcoBoost and 3.7L V6, have reported stalling or no-start conditions immediately after refueling due to fuel vapor purge system calibration issues within the PCM. The evaporative emission canister purge valve and PCM calibration can cause an overly rich condition when the purge valve opens after a full fill-up, flooding the intake and stalling the engine. Ford issued TSB 21-2299 addressing PCM reprogramming to correct the purge flow logic.
Reprogram the PCM/ECM with updated Ford calibration per TSB 21-2299. In some cases, the EVAP canister purge valve (Motorcraft CM-5085 or equivalent) also requires replacement. Dealer scan tool (IDS/FDRS) is required for the reflash procedure.
On the 2015-2023 Ford Transit, ford Transit rear leaf springs and their associated U-bolts have been reported to crack, fatigue, or break outright on high-roof and extended-length variants that are operated at or near maximum payload, particularly in commercial fleet service. The high static load combined with road impacts can cause individual spring leaves to crack and the U-bolts clamping the spring to the axle to loosen or fracture. This is noted in multiple NHTSA complaints and fleet maintenance records as a recurring maintenance item on work vans with 150,000+ miles.
Common Symptoms
Audible clunking or banging from rear axle area under load
Vehicle sits noticeably lower on one side at rear
Visible crack or separation in leaf spring pack
Rear axle shifts laterally under hard acceleration or braking
Vibration felt through floor at highway speeds when loaded
How to Fix
Inspect rear leaf spring assemblies and U-bolts during every major service interval on loaded vehicles. Replace cracked or fatigued spring leaves with OEM Ford spring assemblies or heavy-duty aftermarket equivalents (e.g., Deaver or National Spring). Replace U-bolts (Ford part number KK3Z-5586-A) whenever springs are disturbed. Torque U-bolt nuts to Ford specification (typically 129–174 Nm depending on variant).
On the 2015-2022 Ford Transit, the Ford Transit uses a twin I-beam or independent front suspension with radius arm bushings that are known to wear or crack prematurely, especially in high-mileage commercial fleets or when the vehicle is operated at or near maximum payload regularly. Worn bushings cause the front axle geometry to shift, leading to rapid and uneven tire wear, vague steering, and a pronounced clunking noise over bumps. This is a documented issue in NHTSA complaints and Transit owner forums, particularly on 2015–2020 models used for delivery service.
Common Symptoms
Clunking or banging noise from front suspension over bumps
Rapid or uneven front tire wear
Vague or wandering steering feel
Visible cracking or deformation of rubber bushing material
Vehicle pulling to one side during braking
How to Fix
Replace front radius arm bushings. OEM Ford bushing kit (part number BK3Z-3B203-A or updated revision) should be used. Some owners opt for aftermarket polyurethane bushing upgrades (e.g., Energy Suspension kits) for improved durability. Labor typically involves pressing old bushings out and pressing new ones in with a hydraulic press.
On the 2015-2023 Ford Transit, front brake calipers on the Ford Transit, especially the heavy-duty variants (350 and 350HD), are prone to sticking due to corrosion of the caliper slide pins and guide bolts. The high gross vehicle weight combined with stop-and-go commercial use accelerates heat buildup, which bakes the slide pin grease and causes the pins to seize. This results in one pad wearing far faster than the other, warped rotors, and a persistent pulling sensation during braking. NHTSA has received numerous complaints on this issue across 2015–2022 model years.
Common Symptoms
Vehicle pulling to one side during braking
Premature or uneven pad and rotor wear on one side
Burning smell from front wheel area after driving
Brake drag or reduced fuel economy
Squealing or grinding noise from front brakes at low mileage
How to Fix
Remove front calipers and thoroughly clean and re-lubricate or replace slide pins using high-temperature caliper grease (Motorcraft XG-3 or equivalent). Replace worn pads and rotors as a set. In severe seizure cases, replace the entire caliper assembly (Motorcraft BICF-141 or equivalent). Inspect and replace rubber slide pin boots if cracked or torn.
On the 2020-2024 Ford Transit, later Transits equipped with the 10R80 10-speed automatic have documented owner complaints of harsh 1-2/2-3 shifts, delayed engagement, and occasional shudder. Ford has issued multiple service communications/TSBs across Ford platforms using the 10R80 addressing shift quality via PCM/TCM calibration updates and, in some cases, valve body service. Drivers often describe banging into gear, flare, or hesitation when pulling into traffic.
Perform the latest PCM/TCM calibration update per Ford service publications; if symptoms persist, diagnose for valve body issues and solenoid performance and service/replace the main control/valve body as directed. Verify fluid level/condition using the correct MERCON ULV specification and follow Ford fill procedure.
On the 2018-2023 Ford Transit 2.0L EcoBlue, ecoBlue diesel Transits have documented owner reports of check engine lights and emissions system warnings related to SCR/DEF operation, commonly tied to NOx sensor faults or SCR efficiency monitoring. When the system detects persistent faults, it may trigger reduced power or countdown-to-no-start strategies depending on market/calibration. These issues are frequently accompanied by emissions-related DTCs and can be intermittent before becoming persistent.
Diagnose SCR system with a capable scan tool, verify DEF quality, check wiring/connectors at NOx sensors, and replace failed NOx sensor(s) as indicated; perform required resets/adaptations. If applicable per Ford service guidance, update PCM calibration addressing false SCR/NOx diagnostics and confirm proper dosing operation.
On the 2015-2024 Ford Transit, ford Transit vans are well-known for water infiltration through the roof, particularly in medium-roof and high-roof configurations. Water intrudes through multiple paths: (1) factory roof plug holes (the 2015 roof has 16 plugged holes for optional roof rack and ancillary hardware), (2) roof rack mounting holes where Ford applies only primer circles without top-coat paint, (3) push-pin trim clips along the roof/wall junction, and (4) blocked windshield gutter channels that direct water into the engine bay instead of away from the vehicle. The rust issue is compounded by thin steel roofs and inadequate factory corrosion protection. The FordTransitUSAForum has extensive documentation of roof rust appearing within 3-5 years on vans operating in salt-belt states (Northeast, Midwest). For conversion van owners, water leaks can ruin expensive interior buildouts.
Water inside cargo area after rain, especially at roof/wall junction
Water in cab during heavy rain
Rust bubbles or surface rust appearing on roof panel
Water stains on headliner or cargo area ceiling
Wet floor mats from water entering through gutter area
Musty smell inside van
Water in engine compartment during rain (blocked windshield gutters)
How to Fix
Preventive sealing: seal all roof plug holes with Dicor lap sealant or Eternabond RV roof tape immediately after purchase. Clean and seal all roof rack mounting holes with rust-inhibiting primer and clear coat. Inspect and clear windshield gutter drains annually. Apply rust-inhibiting undercoat to roof panel interior annually in salt-belt climates. For existing rust: wire brush, treat with Rust-Oleum Rust Reformer, apply self-etching primer, then paint. Dicor 501LSW or Eternabond tape are the most popular roof repair products among Transit owners.
Owner tips & cautions
TipSeal ALL roof holes immediately when you take delivery of a new Transit - before water gets in. Use Dicor 501LSW lap sealant or Eternabond EternaBond-WS-4 tape. On 2015 models, you have 16 factory plug holes to address. This is widely considered the most important first mod for Transit van owners.
TipClear your windshield gutter drains every spring - debris blocks them and water pours into the engine bay instead. The gutter runs along the bottom of the windshield and has drain holes at each corner fender. This is a 10-minute maintenance item that prevents expensive water damage.
WarningIn Rust Belt states (NY, MA, PA, OH, MI, MN, WI, etc.), apply a rust inhibitor to the underside of the roof panel from inside the van before any buildout. Ford's factory rust protection on the roof is minimal. NH Rust Check, Fluid Film, or Rust-Oleum Automotive Rust Reformer are popular choices.
High Confidence2,140 reportsLast reported by owners Dec 2025Reviewed Feb 2026
Community reported
160 owners
On the 2015-2024 Ford Transit, nHTSA complaints and fleet/owner reports commonly cite the Transit sliding door becoming difficult to open/close, popping, grinding, or failing to latch. Wear in the center roller/hinge and track hardware can cause misalignment, especially on high-use cargo vans. The problem often worsens over time and can lead to the door not fully closing or reopening after latching.
Inspect and replace worn center roller/hinge assemblies and damaged track components; realign the sliding door per Ford body service procedure and lubricate tracks with the specified lubricant. Replace any bent track brackets and verify latch operation and striker alignment.
On the 2015-2022 Ford Transit, multiple Ford Transit owners and fleet operators have reported the instrument cluster exhibiting erratic speedometer behavior, gauge dropouts, and spontaneous warning light illumination without stored fault codes corresponding to the indicated faults. The issue is linked to a faulty instrument cluster circuit board or intermittent loss of communication between the cluster and the vehicle's CAN bus network. Ford issued TSB 20-2253 related to instrument cluster display concerns on 2020–2021 Transit models, and earlier model years have similar complaints documented in NHTSA's database.
Speedometer needle sweeping erratically or reading zero while moving
Warning lights (ABS, airbag, check engine) illuminating and extinguishing randomly
Fuel gauge or temperature gauge showing incorrect readings
Total cluster blackout while driving
U-code network communication fault codes stored
How to Fix
Diagnose CAN bus communication using Ford IDS/FDRS to identify any U-code network faults. Inspect cluster connector pins for corrosion or pushed-back terminals. In confirmed cluster failure cases, replace the instrument cluster assembly (Ford part number varies by configuration and trim; must be programmed to vehicle VIN). TSB 20-2253 recommends module reprogramming as a first step before hardware replacement.
On the 2015-2022 Ford Transit, ford Transit vans experience premature alternator failure, often between 50,000-80,000 miles. The internal voltage regulator fails first, causing undercharging or overcharging conditions. Commercial Transit vans with aftermarket upfitter packages (extra lighting, inverters, refrigeration units) are particularly susceptible due to sustained high electrical loads. Symptoms often start as intermittent battery warnings before progressing to a no-start condition.
Whining noise from alternator area that changes with RPM
Voltage gauge reading below 13.5V or above 15V
How to Fix
Replace the alternator assembly with a high-output unit (250A) if the vehicle has aftermarket electrical loads, or OEM replacement (220A) for stock configurations. Always replace the serpentine belt and tensioner at the same time. Test the battery — a failing battery can cause alternator overwork and premature failure. For vans with upfitter packages, install a dual-battery isolator system to prevent alternator overload.
Owner tips & cautions
TipIf you have ANY aftermarket electrical loads (work lights, inverter, refrigeration), upgrade to a 250A alternator and add a dual-battery system with an isolator. The stock 220A alternator was not designed for sustained high-draw accessories and will fail repeatedly.
On the 2015-2023 Ford Transit, long-wheelbase and extended-length Transit models (T-250, T-350, T-350 HD) with two-piece driveshafts develop carrier bearing (center support bearing) failure. The rubber isolator deteriorates and the bearing wears, causing vibrations at highway speeds (50-70 mph) and a prominent clunking noise when shifting between drive and reverse. The issue is accelerated by frequent payload at or near GVWR. The vibration is often misdiagnosed as a tire balance issue.
Visible rubber deterioration on center bearing mount
How to Fix
Replace the driveshaft center support bearing assembly (carrier bearing, rubber mount, and bracket as a unit). Ford part CK4Z-4R602-D for long-wheelbase models. The driveshaft must be properly phased during reinstallation — mark both halves and the carrier bearing bracket position before removal. Failure to maintain proper phasing causes NVH issues. Torque the carrier bearing bracket bolts to 52 ft-lbs.
Owner tips & cautions
WarningMARK the driveshaft phasing before removal. Use paint marks on both driveshaft sections and the carrier bracket relative to the frame crossmember. Installing a driveshaft out of phase creates a vibration that no amount of balancing will fix.
On the 2015-2024 Ford Transit, the Ford Transit rear-wheel-drive models develop axle shaft oil seal leaks at the rear differential, allowing gear oil to weep past the axle seals onto the brake backing plates and brake shoes/pads. The leak is often slow enough to go unnoticed until a rear brake inspection reveals oil-soaked components. In severe cases, contaminated rear brakes cause pulling to one side under braking, which is a significant safety concern for loaded vans.
Common Symptoms
Oil residue visible on inside of rear wheels
Rear brakes feel spongy or pull to one side
Gear oil smell near rear axle
Oil spots on brake backing plate
Low rear differential fluid level
How to Fix
Replace the rear axle shaft oil seals (both sides recommended even if only one is leaking). Remove the axle shaft, clean the axle tube bore, and install new seals using a seal driver to ensure proper depth. Inspect rear brake shoes/pads and drums/rotors for oil contamination — replace if soaked. Top off the differential with 75W-140 synthetic gear oil to the fill plug level. Check the differential vent hose for blockage, which causes internal pressure buildup and accelerates seal failure.
Owner tips & cautions
WarningIf your axle seal has been leaking long enough to contaminate the rear brake shoes or pads, they MUST be replaced. Oil-soaked friction material cannot be cleaned or restored — it will always have reduced stopping power and may cause the van to pull dangerously under hard braking.
On the 2015-2022 Ford Transit, transits equipped with rear A/C (dual HVAC) have documented complaints of repeated refrigerant loss and poor cooling, often traced to leaks at rear A/C lines, fittings, or rear expansion valve connections. Corrosion, vibration, and seal degradation can lead to slow leaks that are hard to find without dye or electronic leak detection. Owners typically notice rear cooling performance dropping first, then the entire system stops cooling.
Common Symptoms
Rear A/C warm while front still cool
A/C stops cooling entirely over time
Hissing near rear HVAC unit or lines
Oily residue at A/C fittings/lines
Repeated need for refrigerant recharge
How to Fix
Leak-test the system, repair/replace leaking rear A/C lines or rear expansion valve seals/components as needed, then evacuate and recharge to specification. Replace any corroded line sections and install updated seals where applicable; verify condenser fan operation and system pressures after repair.
FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS
Quality Vans (Quality Vans) is recalling certain 2020-2023 Ford Transit vans equipped with Onan QG 2800i EVAP generators, part number 2.8HGLAA-8303A. The fuel hose between the inline fuel filter and the Injection Pump Module (IPM) may not be properly secured, which can cause a gas leak.
Campaign #23V49900019/07/2023
BACK OVER PREVENTION: SENSING SYSTEM: CAMERA
Ford Motor Company (Ford) is recalling certain 2020-2023 Lincoln Aviator, 2018-2021 Lincoln Navigator, 2022-2023 Ford Transit, and 2021 Ford Bronco vehicles. The rearview camera, or 360-degree view camera if equipped, may not display a rearview image when the vehicle is placed in reverse.
The 2017-2023 Ford Transit with the 2.0L EcoBlue diesel engine (available in some markets) and the 3.5L EcoBoost V6 experience fuel injector failures causing rough running, misfires, poor idle, reduced performance, and excessive smoke on cold start. Parkers UK documents an offici… Repairs typically run $300-$2,500. Severity: high.
What is the 2015-2023 Ford Transit Front Brake Caliper Sticking / Premature Pad and Rotor Wear?
Front brake calipers on the Ford Transit, especially the heavy-duty variants (350 and 350HD), are prone to sticking due to corrosion of the caliper slide pins and guide bolts. The high gross vehicle weight combined with stop-and-go commercial use accelerates heat buildup, which b… Repairs typically run $150-$900. Severity: high.
What is the 2015-2021 Ford Transit PCM/ECM Software Calibration Causing Stall or No-Start After Refueling?
Ford Transit owners, particularly those with the 3.5L EcoBoost and 3.7L V6, have reported stalling or no-start conditions immediately after refueling due to fuel vapor purge system calibration issues within the PCM. The evaporative emission canister purge valve and PCM calibratio… Severity: high.
What is the 2020-2024 Ford Transit 10R80 (10-speed) Harsh/Delayed Shifts and Shudder (Software/Valve Body Related)?
Later Transits equipped with the 10R80 10-speed automatic have documented owner complaints of harsh 1-2/2-3 shifts, delayed engagement, and occasional shudder. Ford has issued multiple service communications/TSBs across Ford platforms using the 10R80 addressing shift quality via… Repairs typically run $250-$3,200. Severity: high.
What is the 2015-2023 Ford Transit Rear Leaf Spring U-Bolt and Spring Pack Fatigue / Breakage?
Ford Transit rear leaf springs and their associated U-bolts have been reported to crack, fatigue, or break outright on high-roof and extended-length variants that are operated at or near maximum payload, particularly in commercial fleet service. The high static load combined with… Repairs typically run $350-$1,200. Severity: high.
What is the 2018-2023 Ford Transit NOx Sensor / SCR DEF System Faults Causing Reduced Power (2.0L EcoBlue Diesel)?
EcoBlue diesel Transits have documented owner reports of check engine lights and emissions system warnings related to SCR/DEF operation, commonly tied to NOx sensor faults or SCR efficiency monitoring. When the system detects persistent faults, it may trigger reduced power or cou… Repairs typically run $350-$1,800. Severity: high.
What is the 2015-2022 Ford Transit Turbo Wastegate Actuator Sticking Causing Limp Mode?
The 3.5L EcoBoost twin-turbo Transit models experience wastegate actuator sticking, particularly on the passenger-side turbo. Carbon buildup and heat cycling cause the wastegate pivot to seize, resulting in either overboosting (wastegate stuck closed) or underboosting (stuck open… Repairs typically run $200-$2,500. Severity: high.
What is the 2015-2024 Ford Transit Roof Water Leaks and Premature Rust - All Body Styles?
Ford Transit vans are well-known for water infiltration through the roof, particularly in medium-roof and high-roof configurations. Water intrudes through multiple paths: (1) factory roof plug holes (the 2015 roof has 16 plugged holes for optional roof rack and ancillary hardware… Repairs typically run $50-$3,500. Severity: medium.
What is the 2015-2022 Ford Transit Instrument Cluster / Speedometer Erratic Readings and Gauge Dropout?
Multiple Ford Transit owners and fleet operators have reported the instrument cluster exhibiting erratic speedometer behavior, gauge dropouts, and spontaneous warning light illumination without stored fault codes corresponding to the indicated faults. The issue is linked to a fau… Severity: medium.
What is the 2015-2024 Ford Transit Sliding Door Track/Roller Wear Causing Binding, Noise, or Door Not Closing?
NHTSA complaints and fleet/owner reports commonly cite the Transit sliding door becoming difficult to open/close, popping, grinding, or failing to latch. Wear in the center roller/hinge and track hardware can cause misalignment, especially on high-use cargo vans. The problem ofte… Repairs typically run $200-$1,200. Severity: medium.
What is the 2015-2022 Ford Transit Front Suspension Radius Arm Bushing Premature Wear and Cracking?
The Ford Transit uses a twin I-beam or independent front suspension with radius arm bushings that are known to wear or crack prematurely, especially in high-mileage commercial fleets or when the vehicle is operated at or near maximum payload regularly. Worn bushings cause the fro… Repairs typically run $200-$600. Severity: medium.
What is the 2020-2023 Ford Transit Turbocharger Boost Pressure Sensor / MAP Sensor Failure (2.0L EcoBlue)?
The 2.0L EcoBlue diesel Transit has a documented pattern of boost pressure sensor and manifold absolute pressure (MAP) sensor failures, causing incorrect boost readings fed to the ECM. When the sensor fails or reads out of range, the ECM defaults to a conservative fueling map, re… Repairs typically run $80-$350. Severity: medium.
What is the 2015-2022 Ford Transit Rear HVAC Line/Expansion Valve Leaks (Dual A/C) Causing Loss of Refrigerant?
Transits equipped with rear A/C (dual HVAC) have documented complaints of repeated refrigerant loss and poor cooling, often traced to leaks at rear A/C lines, fittings, or rear expansion valve connections. Corrosion, vibration, and seal degradation can lead to slow leaks that are… Repairs typically run $300-$1,800. Severity: medium.
What is the 2015-2024 Ford Transit Oil Pan Drain Plug Thread Stripping?
The Ford Transit aluminum oil pan is prone to drain plug thread stripping, especially in vehicles serviced at quick-lube shops or with frequent oil changes. The aluminum pan threads are softer than the steel drain plug, and over-torquing or cross-threading during routine oil chan… Repairs typically run $50-$800. Severity: medium.
What is the 2015-2022 Ford Transit Alternator Premature Failure and Voltage Regulator Issues?
Ford Transit vans experience premature alternator failure, often between 50,000-80,000 miles. The internal voltage regulator fails first, causing undercharging or overcharging conditions. Commercial Transit vans with aftermarket upfitter packages (extra lighting, inverters, refri… Repairs typically run $400-$1,000. Severity: medium.
What is the 2015-2023 Ford Transit Driveshaft Center Support / Carrier Bearing Failure?
Long-wheelbase and extended-length Transit models (T-250, T-350, T-350 HD) with two-piece driveshafts develop carrier bearing (center support bearing) failure. The rubber isolator deteriorates and the bearing wears, causing vibrations at highway speeds (50-70 mph) and a prominent… Repairs typically run $300-$800. Severity: medium.
What is the 2015-2024 Ford Transit Rear Axle Oil Seal Leak at Axle Shaft?
The Ford Transit rear-wheel-drive models develop axle shaft oil seal leaks at the rear differential, allowing gear oil to weep past the axle seals onto the brake backing plates and brake shoes/pads. The leak is often slow enough to go unnoticed until a rear brake inspection revea… Repairs typically run $250-$700. Severity: medium.
