What does code P2AE4 mean?

Q: What does code P2AE4 mean?

Intake Air O2 Sensor Pumping Current Circuit Low Bank 1. P2AE4 indicates that the powertrain control module has detected an abnormally low current on the pumping circuit of the intake air oxygen sensor on bank 1, which is a wideband air-fuel ratio sensor mounted ahead of the catalytic converter. The sensor's internal pump cell is not drawing the expected current, so the computer cannot trust the exhaust oxygen reading used for fuel control.

DTC codes / P2Axx · Hybrid propulsion / P2AE4

P2AE4Intake Air O2 Sensor Pumping Current Circuit Low Bank 1

P2AE4 indicates that the powertrain control module has detected an abnormally low current on the pumping circuit of the intake air oxygen sensor on bank 1, which is a wideband air-fuel ratio sensor mounted ahead of the catalytic converter. The sensor's internal pump cell is not drawing the expected current, so the computer cannot trust the exhaust oxygen reading used for fuel control.

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.