P22C2

O2 Sensor Pumping Current Trim Circuit/Open Bank 2 Sensor 2

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$28–67 (est.)

Symptoms

Check Engine light comes on
Increased fuel consumption
Reduced engine power
Unstable engine idling
Increased level of harmful emissions

Causes

Open or short circuit in the oxygen sensor circuit
Oxygen sensor malfunction (bank 2, sensor 2)
Wiring harness damage
Poor contact in the sensor connector
Malfunction of the engine control unit (rare)

How to Fix

Check the continuity of the oxygen sensor circuit
Inspect the connector and wires for damage
Check the resistance and signal of the oxygen sensor
Replace the faulty oxygen sensor if necessary
Clear error codes and check if error is returned

Related codes

P22C1 P22C3 P0138