P2AE9
Intake Air O2 Sensor Pumping Current Trim Circuit Open Bank 2
The trim adjustment for the pumping current of the intake air oxygen sensor on bank 2 reports a circuit open condition. Wide-band lambda regulation on the intake side is impaired.
The trim adjustment for the pumping current of the intake air oxygen sensor on bank 2 reports a circuit open condition. Wide-band lambda regulation on the intake side is impaired.
Common causes
- high
Open in pump current wire
One of the most commonly reported causes for this code — check this first.
Typical part cost: $170-880
- medium
Internal open in pump cell
A plausible cause — test and verify before replacing parts.
Typical part cost: $170-880
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
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Frequently asked questions
What does P2AE9 mean?
P2AE9 means "Intake Air O2 Sensor Pumping Current Trim Circuit Open Bank 2". It is a generic OBD-II code that points to a fault in the auxiliary emission controls.
What are the most common causes of P2AE9?
open in pump current wire; internal open in pump cell; pin pushed back out of connector body — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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