P2E82
Cold Start Engine Coolant Pump Overspeed
During cold start, the engine coolant pump exceeds the calibrated maximum speed. Indicates load lost or supply voltage too high.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: hard
Common causes
Ordered by how often each turns out to be the cause.
- Pump impeller damagedCommon
- Supply voltage above nominalPossible
Parts involved
- Engine Coolant Pump
P2E82 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.