What does code P2D0B mean?

Q: What does code P2D0B mean?

Motor Electronics Coolant Pump C Overspeed/Air in System. P2D0B indicates the engine control module has detected an overspeed condition or air entrapment in the electric coolant pump circuit designated as 'C', which is typically the main motor electronics cooling pump on hybrid and electric vehicles. The computer compares commanded pump speed against feedback from the pump's internal sensor and flags the code when the pump runs faster than expected, often because it is spinning in air rather than liquid.

DTC codes / P2Dxx · Hybrid propulsion / P2D0B

P2D0BMotor Electronics Coolant Pump C Overspeed/Air in System

P2D0B indicates the engine control module has detected an overspeed condition or air entrapment in the electric coolant pump circuit designated as 'C', which is typically the main motor electronics cooling pump on hybrid and electric vehicles. The computer compares commanded pump speed against feedback from the pump's internal sensor and flags the code when the pump runs faster than expected, often because it is spinning in air rather than liquid.

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.