What does code P2B49 mean?

DTC codes / P2Bxx · Hybrid propulsion / P2B49

P2B49B Camshaft Position Actuator Position Sensor B Circuit Low Bank 1

P2B49 indicates that the powertrain control module (PCM) has detected an abnormally low voltage signal on the circuit for the Bank 1 B camshaft position actuator position sensor. This sensor reports the actual position of the camshaft phaser to the PCM, and a low signal means the PCM cannot reliably determine the phaser's position, which can impair variable valve timing control.

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.