P22AE

O2 Sensor Reference Voltage Circuit/Open Bank 1 Sensor 2

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–56 (est.)

Symptoms

Check Engine Light Is On
Increased fuel consumption
Reduced engine power
Unstable engine idling
Increase in harmful emissions

Causes

Open or short circuit in the oxygen sensor circuit
Poor contact in the sensor connector
Malfunction of the oxygen sensor itself
Wiring harness damage
Problems with the engine ECU

How to Fix

Visual inspection of sensor wiring and connectors
Checking the continuity of the sensor circuit with a multimeter
Checking the reference voltage at the sensor
Replacing the oxygen sensor if necessary
Resetting the fault code and checking system operation

Related codes

P2237 P2238 P2243