OBD-II code · Powertrain (generic, extended)
P261A Coolant Pump B Control Circuit / Open
The controller cannot drive the second electric coolant pump (B). Often used for aftertreatment, turbo cool-down, or hybrid battery loops — fault stops circulation in that loop.
Is it safe to drive with P261A?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyOpen pump motor winding
- PossibleBroken control wire to the pump
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–3 h
- Emissions test
- Usually unaffected
- Parts involved
- Coolant Pump B, Pump Relay, Wiring Harness
Related codes
- P2600Coolant Pump A Control Circuit / Open
- P26F4Coolant Pump C Control Circuit / Open
- P2617Crankshaft Position Signal Output Circuit / Open
- P2618Crankshaft Position Signal Output Circuit Low
- P2619Crankshaft Position Signal Output Circuit High
- P261BCoolant Pump B Control Circuit Performance/Stuck Off
- P261CCoolant Pump B Control Circuit Low
- P261DCoolant Pump B Control Circuit High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.