P229E

NOx Sensor Circuit Bank 1 Sensor 2

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine Light Is On
Reduced engine power
Increased fuel consumption
Unstable engine idling
Dips during acceleration

Causes

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

How to Fix

Check the integrity of the sensor wiring and connectors
Check the resistance and voltage in the sensor circuit
Replace NOx sensor if necessary
Reset the error and check the system operation

Related codes

P229F P2200 P2201