P0867: How to Diagnose & Fix — Transmission Fluid Pressure
3 vehicles · 2 makes · $350-$900 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 Elantra · 2020–2023
On certain 2020 Elantras the IVT (Hyundai's CVT) can store transmission codes and light the check engine lamp; Hyundai's campaign updates the transmission software and replaces the IVT when the listed codes show it may be damaged. On 2020-2023 IVT Elantras covered by bulletin 23-AT-010H, a faulty IVT oil pressure sensor can also set pressure codes, and Hyundai says to replace the whole IVT if slipping, shift shock, poor acceleration or failure to shift into gear come with them. Applies to: Certain 2020 Elantra (AD) sedans with the 2.0L MPI and IVT (service campaigns T5B and 963), plus 2020 Elantra (AD) and 2021-2023 Elantra (CN7) with the IVT for the oil pressure sensor bulletin 23-AT-010H (dated August 2023; it lists the 2021 model year onward). IVT-equipped cars only.
How to Fix
Ask a Hyundai dealer to check the VIN for open campaign 963 (it followed T5B). Under the campaign the dealer updates the TCU, reads the TCU codes in history, current and pending status, and replaces the IVT if P0730, P0731, P0741 or P0867 is present, or if the pressure learning will not complete and P1603 is stored. Outside the campaign, bulletin 23-AT-010H replaces only the oil pressure sensor when the car has codes but drives normally, and the IVT when it also slips or will not shift. Normal warranty rules apply; this is not a recall or a promise of free repair. The campaign repair itself is free for eligible VINs.
Sources for this issue (3)
Hyundai Venue · 2020–2026
Hyundai TSB 23-AT-010H (August 2023) covers 2020MY-and-later Venue (QX) equipped with the IVT, alongside Elantra, Accent and Kona IVT models. The IVT driven-pulley oil pressure sensor (part 48885-02300) can fail electrically or read out of range, turning on the check-engine light with P0845 (sensor output at or below 0.27 V or at or above 4.50 V), P0846 (sensor output 2.5-3.5 V with target-vs-actual driven-pulley pressure off by 4 bar or more) or P0867 (target vs actual secondary pulley pressure differing by more than 7 bar). The bulletin exists because dealers had been replacing whole transmissions for what is a sensor fault: when the vehicle has ONLY the DTC and no drivability complaint (no slipping, shift shock, poor acceleration or failure to engage), the sensor is replaced through the IVT oil pan with a new pan gasket and 7 quarts of fluid, then 'Oil Pressure Characteristics Input' and adaptive-value relearn are performed with GDS-M. If drivability symptoms are present the whole IVT is still replaced. Note P0867 also appears in the T8X campaign list for 2020-22 units, so an owner with P0867 should have both bulletins checked.
Common Symptoms
- Check engine light with the car driving normally
- Stored P0845, P0846 or P0867 in the transmission control unit
- Occasionally rough or hesitant engagement if pressure control drifts
- Code returns after clearing
How to Fix
Have the dealer scan the TCU. If only P0845/P0846/P0867 are stored and the car drives normally, TSB 23-AT-010H authorises replacing the IVT oil pressure sensor (48885-02300), IVT pan gasket (48282-2H000), plug gaskets and fluid, followed by the GDS oil-pressure characteristics input and adaptive learning - subject to actual warranty eligibility. The US 10-year/100,000-mile powertrain warranty generally applies to the original owner; subsequent owners normally retain 5-year/60,000-mile new-vehicle coverage, subject to its terms. Ask the dealer to verify coverage for the diagnosed part. If slipping or shift shock accompanies the code, the transmission itself is replaced.
Call to confirm they can assess your vehicle and perform the stated work. Search results do not confirm qualification, eligibility or coverage.
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)
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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 $350 to $900, depending on the vehicle and root cause.
Which vehicles are affected by P0867?
Au7o has documented P0867 across 3 vehicle models from 2 manufacturers: Chevrolet, Hyundai.
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Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.