P2AE8

Intake Air O2 Sensor Negative Current Control Circuit High Bank 1

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
Dips during acceleration

Causes

Short circuit in the sensor circuit
Oxygen sensor malfunction
Wiring harness damage
Problems with the engine control unit
Contact corrosion

How to Fix

Check the integrity of the wiring to the sensor
Measure sensor resistance
Check control circuit voltage
Replace the oxygen sensor if necessary
Clean contacts and terminals

Related codes

P2AE7 P2AE9 P0135