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.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: medium
Common causes
Ordered by how often each turns out to be the cause.
- Valve sluggish at coldCommon
- Linkage icedPossible
- Sensor element aged beyond calibration windowLess likely
Parts involved
- Engine Coolant Bypass Valve C
P2DE7 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.