P0867: How to Diagnose & Fix — Transmission Fluid Pressure
3 vehicles · 3 makes · $150-$5,500 repair
How to diagnose and fix P0867: 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.
Hyundai Veloster · 2019–2021
Owners of 2.0-liter Velosters equipped with Hyundai's IVT (CVT) report hesitation from a stop, shuddering under light acceleration, delayed engagement, warning messages, and in some cases reduced-power or limp-home behavior. Hyundai issued service information covering DTCs related to transmission pump/pressure and ratio monitoring, indicating this is more than isolated owner perception. Complaints commonly describe the car feeling unsafe when merging or crossing traffic because throttle input does not produce immediate movement.
Common Symptoms
- hesitation from a stop
- shudder or judder during acceleration
- delayed drive engagement
- vehicle will not accelerate normally
- check engine light or transmission warning
- limp mode
How to Fix
Scan the TCM/PCM for stored transmission codes and verify fluid condition, line pressure behavior, and software level. Hyundai service procedures typically start with TCM/ECU updates and adaptation checks; persistent cases may require IVT replacement or internal transmission repair under warranty. A careful road test from cold and after full warm-up is important because many owners report intermittent symptoms.
Sources for this issue (2)
Chevrolet Corvette · 2024–2026
On the E-Ray only, the 8-speed dual-clutch transmission carries an auxiliary fluid pump so the gearbox stays pressurized while the car is moving on electric power alone in Stealth or Shuttle mode. GM published Bulletin #25-NA-278 for 2024-2026 Corvette E-Ray models that display a Service Transmission message in the Driver Information Center along with an illuminated Check Engine MIL, with DTC P1955 (Transmission Fluid Pressure Relief Valve Performance) and/or P0867 (Transmission Fluid Pressure Performance) stored in the TCM. GM identifies the cause as auxiliary pump cavitation traced to the transmission pan fluid filter. This condition is specific to the hybrid E-Ray driveline and does not apply to the Stingray, Z06 or ZR1, which have no electric-only drive mode and no auxiliary pump duty cycle of this kind.
Common Symptoms
- Service Transmission message in the Driver Information Center
- Check Engine light (MIL) illuminated
- DTC P1955 and/or P0867 stored in the transmission control module
- Condition often noticed after driving in Stealth or Shuttle mode
How to Fix
Scan the TCM for P1955 and P0867 as current or history codes. Per Bulletin #25-NA-278, replace the transmission fluid pan filter and re-evaluate the vehicle - GM explicitly directs that no other repairs be attempted for these DTCs. The 15 transmission pan bolts are single-use fasteners and must be replaced and torqued in sequence with a GM-45059-A angle meter per the service information. Most affected cars are still inside the powertrain warranty, so have the work done at a Chevrolet dealer under the bulletin.
Sources for this issue (3)
Kia Rio · 2021–2023
Owners have documented hesitation from a stop, delayed engagement into Drive or Reverse, shuddering at low speed, and inconsistent acceleration behavior from the Rio's Intelligent Variable Transmission (IVT/CVT). These complaints are common enough across Hyundai/Kia small-car applications that service information and dealer software updates have been discussed to address shift logic, drivability calibration, and adaptation behavior. In some cases the issue is software-related; in others, internal transmission wear or pulley/belt problems are suspected when symptoms persist.
Common Symptoms
- hesitation from stop
- delayed engagement into drive
- jerking at low speed
- rubber-band acceleration feel
- shudder during takeoff
- high RPM with poor acceleration
How to Fix
Start by checking for transmission-related TSBs, ECM/TCM calibration updates, and stored CVT pressure or ratio codes. Dealers may perform a software update, relearn/adaptation procedure, and fluid inspection; if shudder, slip, or delayed engagement remains, deeper diagnosis of the IVT assembly may be required. Persistent mechanical symptoms can lead to valve body or full transmission replacement.
Owner tips & cautions
- TipBefore authorizing major transmission work, owners commonly ask the dealer to verify the latest TCM/ECM software and perform the adaptation relearn.
- TipDocument cold-start and stop-and-go behavior on video because intermittent hesitation is easier to prove to a dealer with repeatable evidence.
Sources for this issue (1)
Find P0867 by make
Browse every documented model and issue for your make.
P0867 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 P0867 mean?
P0867 stands for "Transmission Fluid Pressure." This generic powertrain code indicates the transmission control module detected that the measured transmission fluid (line) pressure is outside the expected range. Proper hydraulic pressure is essential for applying clutches and bands and for smooth, correctly timed shifts, so an out-of-range reading can cause shifting problems. Causes often trace to fluid condition or level, internal hydraulic issues, or a faulty pressure sensor.
What are the most common causes of P0867?
The most common causes of P0867 are: Low or dirty transmission fluid, Transmission fluid leak, Faulty transmission fluid pressure sensor, Damaged wiring or connector to the sensor, Worn valve body or stuck pressure control solenoid, Clogged transmission filter, Internal transmission/pump wear. The specific cause varies by vehicle.
How much does it cost to fix P0867?
Repair costs for P0867 range from $150 to $5,500, depending on the vehicle and root cause.
Which vehicles are affected by P0867?
Au7o has documented P0867 across 3 vehicle models from 3 manufacturers: Chevrolet, Hyundai, Kia.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.