OBD-II code · Powertrain (generic, extended)
P261B Coolant Pump B Control Circuit Performance/Stuck Off
The second electric coolant pump is commanded on but does not run. Cooling demand of the connected loop is not satisfied.
Is it safe to drive with P261B?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyPump motor seized by sediment
- PossibleCracked rotor magnet decouples drive
- Less likelyCarbon or debris buildup preventing free movement
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–3.5 h
- Emissions test
- Usually unaffected
- Parts involved
- Coolant Pump B, Pump Motor
Related codes
- P2601Coolant Pump A Control Circuit Performance/Stuck Off
- P2C48Coolant Pump C Control Circuit Performance/Stuck Off
- P2C49Coolant Pump D Control Circuit Performance/Stuck Off
- P2D26Coolant Pump E Control Circuit Performance/Stuck Off
- P2D27Coolant Pump F Control Circuit Performance/Stuck Off
- P2618Crankshaft Position Signal Output Circuit Low
- P2619Crankshaft Position Signal Output Circuit High
- P261ACoolant Pump B Control Circuit / Open
- P261CCoolant Pump B Control Circuit Low
- P261DCoolant Pump B Control Circuit High
- P261ECoolant Pump B Control Circuit Stuck On
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.