P22FB

NOx Sensor Performance - Sensing Element Bank 1 Sensor 1

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$167–444 (est.)

Symptoms

Increased fuel consumption
Check Engine light comes on
Reduced engine power
Increased NOx emissions
Unstable engine idling

Causes

NOx sensor malfunction
Damaged or corroded sensor wiring
Problems with sensor connectors
NOx sensor contamination
Engine ECU malfunction

How to Fix

Check the integrity of the NOx sensor wiring and connectors
Clean the NOx sensor from dirt
Check sensor readings using diagnostic equipment
Replace NOx sensor if necessary
Update the ECU software if there are relevant errors

Related codes

P22FC P22FD P2200