P23AD

NOx Sensor Circuit Range/Performance Bank 1 Sensor 3

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
Engine failures
Problems with passing inspection due to emissions

Causes

NOx sensor malfunction
Open or short circuit in the sensor circuit
Poor contact in the sensor connector
ECU software problems
Mechanical damage to the exhaust system

How to Fix

Check the integrity of the sensor wiring and connectors
Scan the system for additional errors
Check the functionality of the NOx sensor
Update ECU software if necessary
Replace the NOx sensor if it is confirmed to be faulty

Related codes

P2200 P2201 P229F