P22AF

O2 Sensor Reference Voltage Performance Bank 1 Sensor 2

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$22–56 (est.)

Symptoms

Increased fuel consumption
Check Engine Light Is On
Reduced engine power
Unstable engine idling

Causes

Open or short circuit in the sensor circuit
Oxygen sensor malfunction
Problems with the ECU
Corrosion of contacts or connectors

How to Fix

Check the integrity of the sensor circuit
Check connectors and contacts for corrosion
Replace the oxygen sensor if necessary
Check and, if necessary, replace the computer

Related codes

P22AE P22B0 P22B1