OBD-II code · Powertrain (generic, extended)
P2DE7 Cold Start Engine Coolant Bypass Valve C Range/Performance
During cold start, the engine coolant bypass valve C response does not match the cold-start calibration.
Is it safe to drive with P2DE7?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyValve sluggish at cold
- PossibleLinkage iced
- Less likelySensor element aged beyond calibration window
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–4 h
- Emissions test
- Usually unaffected
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Engine Coolant Bypass Valve C
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.