P2601
Coolant Pump A Control Circuit Performance/Stuck Off
The electric coolant pump A is commanded on but does not run. Coolant temperature climbs faster than expected with no flow detected.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: medium
Common causes
Ordered by how often each turns out to be the cause.
- Pump motor seized by debris or sedimentCommon
- Cracked rotor magnet decouples drivePossible
- Carbon or debris buildup preventing free movementLess likely
Parts involved
- Coolant Pump A
- Pump Motor
P2601 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.