P23C0

NOx Sensor Performance - Slow Response High to Low Bank 1 Sensor 3

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 Illuminates
Dips during acceleration
Unstable engine idling

Causes

NOx sensor malfunction
NOx sensor contamination
Problems with wiring to the sensor
Engine control unit malfunction
Mechanical damage to the sensor

How to Fix

Check the status of the NOx sensor
Check the integrity of wiring and connectors
Clean the sensor from dirt (if possible)
Replace NOx sensor if necessary
Test the system after repair

Related codes

P23C1 P23C2 P2200