P2AE5Intake Air O2 Sensor Pumping Current Circuit High Bank 1
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- P2AE5 is the high-side fault of the pumping current lead on the bank 1 intake oxygen sensor. A short to the heater supply or another battery feed in the harness is the classic cause; because the intake sensor works in damp air close to where blow-by gas and EGR enter, water in the plug comes next. Ford files a pump lead touching battery voltage on its exhaust probes as P0132, while Saab's 9-5 (2010) uses the high code P2239 when the signal stays between 1.48 and 1.51 V for 1 s despite enrichment, a Type B fault. Neither applies directly to the intake, and no manufacturer documents P2AE5 publicly; CARB supplies the obligation to catch out-of-range inputs. A shorted pump wire can damage the sensor interface in the ECM, so measure before swapping parts. P2AE4 is low, P2AEE bank 2.
- What you may notice
- Check engine light on
- EGR reduced, NOx may rise
- Likely causes
- LikelyPump current lead shorted to the heater or another supply
- PossibleWater or condensate in the sensor plug
- RareSensor interface in the ECM damaged by the short
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Often possible to do yourself.Typical cost: €0 – €450
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.