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DTC codes / P2Axx · Hybrid propulsion / P2AEB

P2AEBIntake Air O2 Sensor Pumping Current Trim Circuit High Bank 2

P2AEB indicates that the powertrain control module has detected an abnormally high current on the pumping current trim circuit for the intake air oxygen sensor on bank 2. This sensor is a wideband air-fuel ratio sensor that uses a pump cell to maintain a reference air-fuel mixture, and the high current reading suggests a short to voltage or a sensor internal fault.

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.

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