DTC codes / P2Bxx · Hybrid propulsion / P2B55
P2B55 means the engine computer has commanded the Bank 1 B camshaft profile actuator to move, but the actuator's internal position feedback shows it is stuck in the on or engaged position. The powertrain control module (PCM) detects this by comparing the commanded state to the actual reported state and sets the code when the actuator fails to release or change position as requested.
Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.
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