P0750: How to Diagnose & Fix — Shift Solenoid A Malfunction
35 vehicles · 10 makes · $100-$5,000 repair
How to diagnose and fix P0750: most-reported vehicles
Ranked by owner reports. Each card gives the symptoms, how to confirm the cause, the fix, parts and sources for that vehicle.
Ford Windstar · 1996–2003
The Ford Windstar equipped with the AX4S (1995-2000) and AX4N/4F50N (2001-2003) automatic transmissions suffers from widespread premature transmission failure. CarComplaints.com records 140 complaints for the 2000 model year alone, and 166 problems for the 2003 model year, making transmission failure the single most reported problem for the Windstar. The AX family of transmissions in the Windstar struggles with lubrication problems, harsh 1-2 and 2-1 gear changes, torque converter clutch issues, and catastrophic internal failures. The torque converter clutch solenoid is a particularly weak point, causing shuddering and codes P0741 and P1744. Average repair cost is $2,190 at 102,200 miles according to CarComplaints.com data. Many owners report needing a complete transmission replacement or rebuild, with costs ranging from $1,750 to $3,100.
Common Symptoms
- Harsh or jerky 1-2 and 2-1 gear shifts
- Transmission slipping or shuddering during acceleration
- Torque converter shudder at 40-55 mph
- Check engine light with transmission codes
- Delayed engagement when shifting from Park to Drive
- Transmission overheating warning
- Complete loss of forward gears
- Grinding or whining noise from transmission
How to Fix
For TCC shudder only (codes P0741/P1744), start with transmission fluid change and TCC solenoid replacement ($400-800). For complete transmission failure, remanufactured transmission replacement is the most common solution ($1,750-2,500 installed). Jasper and Ford Motorcraft remanufactured units are the most commonly recommended. Rebuild is an option at $2,000-3,100 but ensure the torque converter is also replaced. Preventive: change transmission fluid every 30,000 miles - the Windstar transmission runs hot and degrades fluid rapidly.
Sources for this issue (1)
Ford Crown Victoria · 1998–2011
The 4R70W, 4R75W and 4R75E automatic transmissions used in the 1998-2011 Ford Crown Victoria are prone to shift solenoid pack failure, causing erratic shifting, failure to shift into certain gears, or the transmission getting stuck in a single gear (limp mode). The valve body carries several electronically controlled solenoids (Shift Solenoids 1 and 2, the TCC solenoid, and the EPC solenoid) that regulate hydraulic fluid flow to engage gear clutch packs. These solenoids wear out from heat cycling, fluid contamination, and electrical degradation over time. The Transmission Repair Cost Guide documents this as a common issue across Ford 4.6L-equipped vehicles. Codes P0750 and P0755 (shift solenoid A/B malfunction) and P0740/P0743 (TCC solenoid) are the most commonly associated DTCs.
Common Symptoms
- Harsh or delayed shifts between gears
- Transmission stuck in one gear (limp mode / failsafe)
- Erratic or unpredictable shift points
- Check engine light illuminated
- Transmission slipping between 2nd and 3rd gear
- No overdrive engagement
- Flare shifts (RPM spike between gears)
- Transmission warning light on dashboard
How to Fix
Replace the shift solenoid assembly together with the TCC solenoid rather than one solenoid at a time. On the 4R70W/4R75W/4R75E, Shift Solenoids 1 and 2 share one assembly, while the TCC and EPC solenoids are separate parts on the valve body, and they typically fail within a short window of each other. Solenoid pack part cost is $80-150, labor is 2-3 hours ($200-450). Always replace transmission fluid and filter simultaneously. If transmission has been driven extensively in limp mode, internal clutch damage may require a rebuild ($1,800-2,800).
Sources for this issue (1)
Dodge Ram 1500 · 1996–2008
The 46RE (V8 gas) and 47RE (diesel) 4-speed automatic transmissions in Ram 1500 trucks are prone to premature failure, particularly the overdrive unit, governor pressure solenoid, and torque converter lockup. These transmissions are based on the venerable A727/A518 Torqueflite design but the electronic overdrive components are the weak link. Transmission slipping, harsh shifts, and stuck-in-gear conditions are common, especially in towing applications. Overheating is the primary cause of failure.
Common Symptoms
- Transmission slipping in overdrive
- Harsh or delayed shifts
- Stuck in 2nd gear (limp mode)
- Transmission overheating under towing
- Torque converter shudder at highway speed
How to Fix
Sources for this issue (1)
Dodge Ram 2500 · 1994–2009
Mazda Tribute · 2001–2008
Find P0750 by make
Browse every documented model and issue for your make.
P0750 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P0750 mean?
P0750 stands for "Shift Solenoid A Malfunction." This code indicates the transmission control system detected a malfunction in shift solenoid 'A', one of the electrically operated valves that direct hydraulic fluid to engage gears. The computer commands these solenoids to control upshifts and downshifts, and it monitors their circuits and the resulting gear changes. When solenoid A doesn't respond electrically as expected — or the resulting shift doesn't happen correctly — this code is set. You may notice harsh, delayed, or missing shifts, or the transmission may enter a fail-safe (limp) mode.
What are the most common causes of P0750?
The most common causes of P0750 are: Failed or stuck shift solenoid A, Open, shorted, or chafed solenoid wiring, Corroded or loose transmission connector, Low, dirty, or degraded transmission fluid, Clogged solenoid or valve body passages, Internal valve body or hydraulic fault, Faulty transmission control module (TCM). The specific cause varies by vehicle.
How much does it cost to fix P0750?
Repair costs for P0750 range from $100 to $5,000, depending on the vehicle and root cause.
Which vehicles are affected by P0750?
Au7o has documented P0750 across 35 vehicle models from 10 manufacturers: Chrysler, Citroen, Dodge, Ford, Honda, Kia, Mazda, Mitsubishi, Toyota, Volvo.
Join 600+ people using Au7o to better understand their vehicles.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.