P2E65Engine Coolant Bypass Valve E Stuck/Open
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Needs a drive cycle to confirm a fix
- How the car detects it
- P2E65 is a functional fault: the electrics of valve E are fine, but the valve remains open although it was told to close. The official title is written Stuck/Open, though it means stuck open, the partner of P2E67. No carmaker documents valve E publicly. GM shows the method on its block rotary valve D (P26C0): commanded and measured angle differ by 10° or more while the raw feedback sits at 50° or above, 4 of 5 seconds, Type A in the 2019 L3B tables. Without a position sensor, a Ford patent infers a stuck warm-up valve from coolant and transmission fluid temperatures before and after the command. GM bulletin 21-NA-149 adds that a chafed engine harness can trigger such valve codes. Open valves waste heat during warm-up.
- What you may notice
- Engine and cabin heat take longer to come up
- Check engine light
- Slightly higher fuel use on short trips
- Likely causes
- LikelyValve body jammed open by deposits or worn seals
- PossibleBroken gear or weak actuator that cannot drive the valve closed
- PossiblePosition sensor or its wiring reporting an open valve that is actually closed
- RareChafed engine harness disturbing drive or feedback signals
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €120 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.