What does code P2B69 mean?

Q: What does code P2B69 mean?

Coolant Pump D Supply Voltage Circuit. P2B69 indicates that the engine control module (ECM) has detected an abnormal voltage condition on the supply circuit for coolant pump D, which is an auxiliary electric pump used for charge air cooling or battery thermal management. The ECM monitors the voltage on the pump's power feed and sets this code when the voltage falls outside the expected range, typically indicating an open circuit, short to ground, or high resistance in the wiring or pump itself.

DTC codes / P2Bxx · Hybrid propulsion / P2B69

P2B69Coolant Pump D Supply Voltage Circuit

P2B69 indicates that the engine control module (ECM) has detected an abnormal voltage condition on the supply circuit for coolant pump D, which is an auxiliary electric pump used for charge air cooling or battery thermal management. The ECM monitors the voltage on the pump's power feed and sets this code when the voltage falls outside the expected range, typically indicating an open circuit, short to ground, or high resistance in the wiring or 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.