P2AEF

Intake Air O2 Sensor Negative Current Control Circuit Open Bank 2

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$28–89 (est.)

Symptoms

Check Engine light comes on
Increased fuel consumption
Reduced engine power
Unstable idling
Possible transition to emergency mode

Causes

Broken wire in the sensor control circuit
Poor contact in the sensor connector
Malfunction of the oxygen sensor itself
Wiring harness damage
Problems with the engine control unit

How to Fix

Check the integrity of the wires in the sensor control circuit
Inspect the sensor connector for corrosion or damage.
Check the resistance of the oxygen sensor
If necessary, replace the oxygen sensor
Check the operation of the engine control unit

Related codes

P2AEE P2AF0 P2AF1