P2AE0Intake Air O2 Sensor Pumping Current Trim Circuit Open Bank 1
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Needs a drive cycle to confirm a fix
- How the car detects it
- P2AE0 says the calibration (trim) wire of bank 1's intake O2 sensor has lost continuity. On a Bosch-type wide-band element this is pin 5 (RT/IA), which connects a resistor in the plug that Bosch uses to set the characteristic of each individual sensor; without it the ECM scales the oxygen signal wrongly. No manufacturer documents P2AE0 publicly, and no bulletin lists it. On exhaust probes Ford spots an open IA line (P2626) on overrun with the injectors cut: if the pumping current in pure air stays above roughly 3.1 mA for 2 s, the code sets. Saab's 2010 9-5 uses a 4.81 V limit in the same situation. Ford's EGR patent also learns the intake sensor's zero point at idle or during fuel cut, so a wrong air reading skews the EGR estimate. P2AE1/P2AE2 are low/high, P2AE9 bank 2.
- What you may notice
- Check engine light on
- EGR reduced or run without oxygen feedback
- NOx emissions may rise
- Likely causes
- LikelyTrim lead (pin 5) broken in the harness
- PossibleTrim contact pushed back or corroded in the sensor plug
- RareCalibration resistor inside the sensor connector open
- 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 – €350
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.