Powertrain
generic / SAE
P0B3A
Motor Electronics Coolant Pump B Control Circuit High
The motor electronics coolant pump B control circuit reports a control circuit high condition. Power electronics cooling cannot be commanded reliably on branch B.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / numberB / 3A
Possible causes
- Control wire shorted to B+ high
- Open pump motor medium
- Connector pins corroded - high contact resistance low
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 300–1800 €
- Estimated time: 2–7 h
- Component: motor electronics coolant pump b
- Component: wiring harness
- Component: hybrid control module
- MIL / check engine light
- limp mode possible
Sources
References
sae:J2012