P22C4

O2 Sensor Pumping Current Trim Circuit High Bank 2 Sensor 2

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 engine idling
Increased level of harmful emissions

Causes

Bank 2 Sensor 2 oxygen sensor malfunction
Open or short circuit in the sensor circuit
Poor contact in the sensor connector
Engine control unit (ECU) malfunction
Sensor circuit grounding problems

How to Fix

Check the status of the Bank 2 Sensor 2 oxygen sensor
Check the continuity and resistance of the sensor circuit
Check connectors and contacts for corrosion or damage
If necessary, replace the oxygen sensor
Reset the error code and check if it appears again

Related codes

P22C5 P22C3 P0138