P22FC

NOx Sensor Performance - Slow Response Low to High Bank 1 Sensor 2

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$167–444 (est.)

Symptoms

Increased fuel consumption
Reduced engine power
Check Engine light comes on
Dips during acceleration
Unstable engine idling

Causes

NOx sensor contamination
Problems with the sensor electrical circuit
Malfunction of the NOx sensor itself
Wiring Harness Problems
ECU software errors

How to Fix

Check NOx sensor electrical circuit
Clean the sensor from dirt
Check ECU software for updates
Replace NOx sensor if necessary
Check the condition of the wiring harness

Related codes

P22FD P2200 P2201