Powertrain
generic / SAE
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.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number6 / 1A
Possible causes
- Open pump motor winding high
- Broken control wire to the pump medium
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 180–900 €
- Estimated time: 1–3 h
- Component: coolant pump b
- Component: pump relay
- Component: wiring harness
- MIL / check engine light
Sources
References
sae:J2012