P2817Pressure Control Solenoid H Performance/Stuck Off
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- P2817 means valve H fails to produce the effect it is commanded to give. On GM nine- and ten-speed automatics H is the converter clutch valve: too much slip in lock mode (130 rpm) or a large slip error in controlled mode, counted three times, sets a Type A fault. GM's PIP6005 traces the code on 2024-2025 Enclave, Traverse and Acadia with the 8T65 to a seal on the turbine shaft that was harmed when the converter went in; torque converter and seal are replaced. Honda calls H the O/P shift solenoid of its CVT: bulletin 19-047 covers 2016-2018 Civic 1.5 L, 2017-2018 CR-V and some 2018-2019 Accord, where the module misread drive pulley pressure as too high, and new software fixes it. The flashing D lamp, converter slip or poor fuel economy follow. P2818 is the reverse fault.
- What you may notice
- MIL on or flashing D indicator
- Converter clutch slips, engine speed higher than usual at cruise
- Increased fuel consumption
- Likely causes
- LikelyValve H stuck or hydraulically unable to apply
- PossibleDamaged turbine shaft seal letting converter clutch pressure escape (GM 8T65)
- PossibleMisjudged pressure signal in older control software (Honda CVT)
- RareLow or degraded transmission fluid
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €100 – €4,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.