P2202

NOx Sensor Circuit Low Bank 1 Sensor 1

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$56–167 (est.)

Symptoms

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

Causes

NOx sensor malfunction
Open or short circuit in the sensor circuit
Poor contact in the sensor connector
Wiring harness damage
Engine control unit malfunction

How to Fix

Check the integrity of the sensor wiring and connectors
Check the voltage and resistance in the sensor circuit
Scan the control unit for additional errors
Replace NOx sensor if necessary
Reset the error and check the system operation

Related codes

P2201 P2203 P229F