What does code P2B5B mean?

Q: What does code P2B5B mean?

Engine Coolant Flow Control Valve Control Circuit High. P2B5B means the powertrain control module (PCM) commanded the engine coolant flow control valve to a specific position, but the feedback circuit reported a voltage above the expected range for that command. The PCM interprets this high voltage as an open circuit, a short to power, or a valve that cannot move to the commanded position.

DTC codes / P2Bxx · Hybrid propulsion / P2B5B

P2B5BEngine Coolant Flow Control Valve Control Circuit High

P2B5B means the powertrain control module (PCM) commanded the engine coolant flow control valve to a specific position, but the feedback circuit reported a voltage above the expected range for that command. The PCM interprets this high voltage as an open circuit, a short to power, or a valve that cannot move to the commanded position.

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.