OBD-II code · Powertrain (generic, extended)
P2AE8 Intake Air O2 Sensor Negative Current Control Circuit High Bank 1
The negative pump current control of the intake air oxygen sensor on bank 1 reports a circuit high condition. Wide-band lambda regulation on the intake side is impaired.
Is it safe to drive with P2AE8?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyPump current wire shorted to B+
- PossibleOpen pump cell
- Less likelyConnector pins corroded - high contact resistance
Symptoms
- Check engine light on
- Increased fuel consumption
- Possible rough idle or hesitation
- Failed emissions test
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–3 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Intake Air O2 Sensor B1, Wiring Harness, Ecm
Related codes
- P2AF1Intake Air O2 Sensor Negative Current Control Circuit High Bank 2
- P2AE5Intake Air O2 Sensor Pumping Current Circuit High Bank 1
- P2AE6Intake Air O2 Sensor Negative Current Control Circuit Open Bank 1
- P2AE7Intake Air O2 Sensor Negative Current Control Circuit Low Bank 1
- P2AE9Intake Air O2 Sensor Pumping Current Trim Circuit Open Bank 2
- P2AEAIntake Air O2 Sensor Pumping Current Trim Circuit Low Bank 2
- P2AEBIntake Air O2 Sensor Pumping Current Trim Circuit High Bank 2
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.