P2AEBIntake Air O2 Sensor Pumping Current Trim Circuit High Bank 2
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- P2AEB indicates excessive voltage on the trim wire serving the second bank's intake O2 sensor. A short to the heater or another supply wire, or moisture bridging contacts in the plug, can lift the line; Saab's 2010 9-5 test procedure for the comparable exhaust probe expects roughly 2.8 V on its trim terminal at ignition-on, so a reading near battery voltage is a clear sign. Ford's exhaust analog for bank 2 is P2631, used only on NTK probes for a trim lead shorted to battery. For an intake sensor on bank 2 no manufacturer documentation exists; CARB's comprehensive-component rule is the basis. Since the resistor sets the characteristic, a falsified trim value shifts the oxygen reading and with it the EGR calculation of that bank. P2AEA is low, P2AE9 open, P2AE2 bank 1.
- What you may notice
- Check engine light on
- EGR on bank 2 reduced, NOx may rise
- Likely causes
- LikelyTrim lead shorted to the heater or another supply
- PossibleMoisture bridging contacts in the plug
- RareInternal short in the sensor connector module
- 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.