Powertrain
generic / SAE
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.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number6 / 1E
Possible causes
- ECU output driver stuck on high
- Control wire shorted to a permanent B+ supply medium
- Carbon or debris buildup preventing free movement low
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 150–800 €
- Estimated time: 0.8–3 h
- Component: coolant pump b
- Component: control module
- Component: wiring harness
- MIL / check engine light
Sources
References
sae:J2012