What does code P2B87 mean?

Q: What does code P2B87 mean?

Coolant Pump A Underspeed. P2B87 indicates that the engine control module has detected the coolant pump designated as 'A' is running slower than the commanded speed, based on feedback from the pump's speed sensor or circuit. The pump may be electrically driven and controlled by a module, and the code sets when actual pump speed falls below the expected threshold for a calibrated time.

DTC codes / P2Bxx · Hybrid propulsion / P2B87

P2B87Coolant Pump A Underspeed

P2B87 indicates that the engine control module has detected the coolant pump designated as 'A' is running slower than the commanded speed, based on feedback from the pump's speed sensor or circuit. The pump may be electrically driven and controlled by a module, and the code sets when actual pump speed falls below the expected threshold for a calibrated time.

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.