Powertrain, generic (extended)

P2AEA Intake Air O2 Sensor Pumping Current Trim Circuit Low Bank 2

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modeNo

P2AEA reports a trim circuit voltage below the permitted range at the bank 2 intake O2 sensor. Likely culprits are a trim wire grounded where the harness passes the second turbocharger, or a damaged resistor inside the sensor connector. Ford's 2012 summary assigns the exhaust analog P2630 to NTK probes for an open or grounded RL lead, a reminder that a low reading need not mean a short. Engines with a separate bank 2 intake sensor are rare and no manufacturer documents P2AEA. If P2AE1 is stored too, look at what both sensors share, such as a ground point or the ECM; alone, P2AEA points to the bank 2 sensor and its own wiring. Meanwhile the EGR on that bank loses its oxygen feedback; the lamp comes on and NOx can rise, but the car usually drives normally. P2AE9 is the open, P2AEB the high fault.

Likely causes

Trim lead grounded near the second turbocharger
Calibration resistor in the plug damaged
Fault in a ground or ECM path shared with bank 1

Symptoms

  • Check engine light on
  • Higher NOx, driveability usually unchanged

Repair estimate

DifficultyMediumDIY possible
Parts and labour€0–350
Time0.3–2 h

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

Parts involved

intake air o2 sensor b2wiring harnessecm

Related codes

P2AE9P2AEBP2AE1P2AEDP2630

References: newtonnet.co.uk, bosch-motorsport.com, law.cornell.edu.