P2AEE: Intake Air O2 Sensor Pumping Current Circuit High Bank 2

P2AEE marks the pumping current lead of the bank 2 intake air oxygen sensor as too high. Contact with the heater feed in the shared plug, chafing against a live wire or water that has entered the connector can raise it. On exhaust probes of bank 2, Ford records a battery short of the IP wire as P0152, and CARB obliges the ECM to detect such out-of-range inputs; a code-specific description of P2AEE for the intake side has not been published by any manufacturer. Ford's patent US9441564B2 adds a quirk typical of this sensor: hydrocarbons from crankcase ventilation burn off oxygen at the hot element and distort the reading, but that is a plausibility issue, not an electrical one. Measure the lead against battery voltage before renewing the sensor. P2AED is low, P2AEC open, P2AE5 bank 1.

Medium severity. Can I keep driving?Yes, you can normally drive in moderation, but get it repaired soon: you will use more fuel and the catalytic converter can be damaged over time.

Bank 2 is the side without cylinder 1, so it only exists on V or boxer engines.

Symptoms

Check engine light on
EGR on bank 2 reduced, NOx may rise

Most likely causes

Pump current lead touching the heater feed
Harness chafed against a live wire
Water inside the sensor connector

What to check, in order

Start with the simplest. You can tick off each step.

Check the wiring and connector of the sensor indicated
Check the sensor's ground and make sure the signal wire is not receiving voltage from another circuit.
Look for exhaust leaks
Check the signal in live data with the engine warm
Check the fuse and the heater resistance if the code mentions it
Replace the sensor if it has power and does not respond

Good to know

Repair difficulty: medium
It affects emissions.

What each character of P2AEE means

P: Powertrain: engine and transmission
2: Generic code: same on every make
A: Hybrid or air and fuel
EE: Specific fault in that system

Frequently asked questions

Can I keep driving with code P2AEE?

Yes, you can normally drive in moderation, but get it repaired soon: you will use more fuel and the catalytic converter can be damaged over time.

What causes code P2AEE?

The most common causes are: pump current lead touching the heater feed; harness chafed against a live wire; water inside the sensor connector.

Related codes

Sources

Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.