P2AE2 code meaning
Intake Air O2 Sensor Pumping Current Trim Circuit High Bank 1
Powertrain system Generic code P2Axx codes Check engine light
What P2AE2 means
P2AE2 means the voltage on the trim lead of the intake air O2 sensor for bank 1 is too high. In the six-wire harness of a wide-band probe this line runs next to the heater feed, so a pinched wire or moisture bridging the pins in the connector can drag it towards battery voltage. Ford's 2012 OBD summary books a trim lead shorted to battery as P2628 on NTK probes and under the general high code P0132 on Bosch probes; neither covers an intake sensor, and no manufacturer documents P2AE2 publicly. CARB requires input circuits to be checked for values beyond their range in both directions. According to Bosch the trimming resistor fixes the sensor characteristic, so a falsified value shifts the oxygen reading that EGR control relies on. Check plug and lead against battery voltage before fitting a new sensor. P2AE1 is low, P2AEB bank 2.
P2AE2 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modeNot expected
- Repair difficultyMedium, DIY possible
- Typical labor0.3 to 2 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P2AE2
- Check engine light on
- EGR reduced, NOx may rise
Common causes of P2AE2
- Most likelyTrim lead touching the heater supply
- PossibleMoisture bridging contacts in the sensor plug
- Less likelyInternal short in the sensor or its connector module
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Intake air O2 sensor b1Wiring harnessECM
What each part of P2AE2 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| A | Area: hybrid propulsion. |
| E2 | The exact fault in that area. |
What to do next
- Note P2AE2 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P2AE2
What does P2AE2 mean?
P2AE2 means "Intake Air O2 Sensor Pumping Current Trim Circuit High Bank 1". P2AE2 means the voltage on the trim lead of the intake air O2 sensor for bank 1 is too high. It is a generic code, so it means the same on every make.
Is it safe to drive with P2AE2?
Usually yes, for a short time, if the check engine light is steady and the car drives normally. If the light flashes or the car runs badly, stop and have it checked.
Will P2AE2 fail an emissions test?
Yes, it can. P2AE2 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P2AE2 to fix?
Difficulty: medium. A typical repair takes 0.3 to 2 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will P2AE2 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.