Powertrain, generic (extended)

P2AEE Intake Air O2 Sensor Pumping Current Circuit High Bank 2

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modeNo

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.

Likely causes

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

Symptoms

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

Repair estimate

DifficultyMediumDIY possible
Parts and labour€0–450
Time0.3–2.5 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

intake air o2 sensor b2wiring harnessecm

Related codes

P2AECP2AEDP2AE5P2AEBP2242

References: newtonnet.co.uk, patents.google.com, law.cornell.edu.