What does code P2AE7 mean?

DTC codes / P2Axx · Hybrid propulsion / P2AE7

P2AE7Intake Air O2 Sensor Negative Current Control Circuit Low Bank 1

P2AE7 indicates that the powertrain control module has detected an abnormally low current on the negative control circuit of the intake air oxygen sensor on bank 1. This sensor is a wideband air-fuel ratio sensor that uses a pump cell and a reference cell to measure oxygen content in the intake air stream, and the negative current control circuit is responsible for precisely regulating the sensor's pumping current. When the circuit current falls below the expected threshold, the PCM sets this code and may substitute a default value for intake air oxygen content.

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.