P22A0

NOx Sensor Circuit Low Bank 1 Sensor 2

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$89–278 (est.)

Symptoms

Check Engine light comes on
Deterioration of vehicle dynamics
Increased fuel consumption
Reduced efficiency of the exhaust gas cleaning system
Possible problems when passing technical inspection

Causes

NOx sensor malfunction
Open or short circuit in the sensor circuit
Poor contact in the sensor connector
Engine control unit software error
Mechanical damage to the sensor or wiring

How to Fix

Diagnose the status of the NOx sensor
Check the integrity of the sensor circuit and connectors
Scan the control unit for additional errors
If necessary, replace the NOx sensor
Reset the error and check the system operation

Related codes

P220E P220F P225E