What does code P2E42 mean?

Q: What does code P2E42 mean?

Hybrid/EV Electronics Coolant Pump B Performance. P2E42 indicates that the hybrid or electric vehicle's electronics coolant pump B is not performing as expected, meaning the pump's actual speed or flow does not match the commanded value. The computer monitors the pump's feedback signal and sets this code when the performance deviates from the expected range for a calibrated time, often due to electrical or mechanical faults in the pump circuit or the pump itself.

DTC codes / P2Exx · Hybrid propulsion / P2E42

P2E42Hybrid/EV Electronics Coolant Pump B Performance

P2E42 indicates that the hybrid or electric vehicle's electronics coolant pump B is not performing as expected, meaning the pump's actual speed or flow does not match the commanded value. The computer monitors the pump's feedback signal and sets this code when the performance deviates from the expected range for a calibrated time, often due to electrical or mechanical faults in the pump circuit or the pump itself.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaHybrid propulsion

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.