P2AE7

Intake Air O2 Sensor Negative Current Control Circuit Low Bank 1

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$33–89 (est.)

Symptoms

Check Engine light comes on
Deterioration of vehicle dynamics
Increased fuel consumption
Unstable engine operation at idle
Possible misfires

Causes

Intake air oxygen sensor malfunction
Open or short circuit in control circuit
Poor contact in sensor connectors
Contact corrosion
Engine control unit malfunction

How to Fix

Check the integrity of the sensor wiring and connectors
Check resistance and voltage in control circuit
Clean contacts from corrosion
Replace the oxygen sensor if necessary
Check and, if necessary, replace the engine control unit

Related codes

P2AE8 P2AE6 P2AE5