What does code P2E45 mean?

Q: What does code P2E45 mean?

Hybrid/EV Electronics Coolant Pump B Enable Circuit. P2E45 indicates that the powertrain control module has detected a fault in the enable circuit for the electronics coolant pump B, which is used to circulate coolant through the hybrid or electric vehicle's power electronics. The computer monitors the enable circuit for expected voltage or current behavior and sets this code when the circuit does not respond as commanded, preventing the pump from running.

DTC codes / P2Exx · Hybrid propulsion / P2E45

P2E45Hybrid/EV Electronics Coolant Pump B Enable Circuit

P2E45 indicates that the powertrain control module has detected a fault in the enable circuit for the electronics coolant pump B, which is used to circulate coolant through the hybrid or electric vehicle's power electronics. The computer monitors the enable circuit for expected voltage or current behavior and sets this code when the circuit does not respond as commanded, preventing the pump from running.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyProfessional

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.