P22F9

NOx Sensor Performance - Slow Response Low to High 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
Reduced engine power
Check Engine Light Is On
Increased emissions of harmful substances
Rough engine idling

Causes

NOx sensor malfunction
NOx sensor contamination
Problems with wiring to the sensor
Engine control unit malfunction
Problems with the SCR system

How to Fix

Check the status of the NOx sensor
Check the integrity of wiring and connectors
Clean the sensor from dirt
Replace NOx sensor if necessary
Check the operation of the SCR system

Related codes

P229F P2200 P2201