Powertrain
generic / SAE
P2B87
Coolant Pump A Underspeed
The coolant pump A runs below the calibrated minimum speed for the commanded duty. Mechanical resistance high or supply voltage low.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / numberB / 87
Possible causes
- Mechanical load increased (binding) high
- Supply voltage low under load medium
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 200–1000 €
- Estimated time: 1–4 h
- Component: coolant pump a
- Component: ecm
- MIL / check engine light
- limp mode possible
Sources
References
sae:J2012