What does code P2AC0 mean?

DTC codes / P2Axx · Hybrid propulsion / P2AC0

P2AC0Intake Air O2 Sensor Reference Voltage Circuit Range/Performance Bank 1

P2AC0 indicates that the powertrain control module has detected an out-of-range or performance fault in the reference voltage circuit for the intake air oxygen sensor on bank 1. The computer monitors the voltage supply to the sensor and sets this code when the signal does not match expected values under specific operating conditions.

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.