P2AECIntake Air O2 Sensor Pumping Current Circuit Open Bank 2
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- P2AEC means the pumping current wire of the second-bank intake oxygen sensor is interrupted. On a Bosch-style element the ECM uses this lead to push oxygen into or out of the measuring gap until the Nernst cell is balanced; the current needed is the oxygen signal. Ford's intake EGR patent US9441564B2 derives the recirculated share from the change in that current relative to operation without EGR, so an open lead removes the whole basis. For bank 2 exhaust probes Ford uses P2240, found by a lambda that hardly moves under test pulses. No manufacturer has published P2AEC or an engine fitted with a separate bank 2 intake sensor. Look first at wiring routed near hot exhaust parts of that bank. P2AED/P2AEE are low/high, P2AEF the open return, P2AE3 bank 1.
- What you may notice
- Check engine light on
- EGR on bank 2 without feedback or switched off
- Likely causes
- LikelyPump current lead broken, often from heat near bank 2 exhaust
- PossibleSensor plug loose or not latched
- RarePump cell inside the sensor 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.