Powertrain
generic / SAE
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.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number6 / 1B
Possible causes
- Pump motor seized by sediment high
- Cracked rotor magnet decouples drive medium
- Carbon or debris buildup preventing free movement low
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 200–1000 €
- Estimated time: 1–3.5 h
- Component: coolant pump b
- Component: pump motor
- MIL / check engine light
Sources
References
sae:J2012