What does code P2A0B mean?

DTC codes / P2Axx · Hybrid propulsion / P2A0B

P2A0BManifold Absolute Pressure Sensor B Circuit Range/Performance

P2A0B indicates that the powertrain control module (PCM) has detected an out-of-range or performance fault in the signal circuit for Manifold Absolute Pressure (MAP) Sensor B, which is a secondary MAP sensor used on some engines to monitor pressure in a specific intake tract or after a throttle body. The PCM compares the MAP B signal against expected values derived from other sensors and operating conditions, and it sets this code when the voltage or calculated pressure falls outside the allowable range for a calibrated time period.

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.