Powertrain
generic / SAE
P0E50
Motor Electronics Coolant Pump B Control Circuit Intermittent/Erratic
The motor electronics coolant pump B control signal drops out or jumps intermittently. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / numberE / 50
Possible causes
- Connector not seated high
- Noisy ground reference medium
- Connector with intermittent contact under vibration low
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 150–800 €
- Estimated time: 0.5–3 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