OBD-II code · Powertrain (generic, extended)
P261E Coolant Pump B Control Circuit Stuck On
The second coolant pump runs even when no command is active. Driver is stuck on or the wire is shorted to a permanent supply.
Is it safe to drive with P261E?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyECU output driver stuck on
- PossibleControl wire shorted to a permanent B+ supply
- Less likelyCarbon or debris buildup preventing free movement
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.8–3 h
- Emissions test
- Usually unaffected
- Parts involved
- Coolant Pump B, Control Module, Wiring Harness
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.