What does code P2AE8 mean?

DTC codes / P2Axx · Hybrid propulsion / P2AE8

P2AE8Intake Air O2 Sensor Negative Current Control Circuit High Bank 1

P2AE8 indicates that the powertrain control module has detected an abnormally high 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 high current on its negative control line points to a circuit fault or sensor internal failure.

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.