P2BAD

NOx Exceedence - Root Cause Unknown

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–278 (est.)

Symptoms

Check Engine Light Is On
Increased exhaust smoke is possible
Reduced engine power
Increased fuel consumption
Rough engine idling

Causes

Exhaust gas recirculation (EGR) system malfunction
Problems with the catalytic converter
Low fuel quality
NOx sensor malfunction
Problems with the urea injection system (diesel engines)

How to Fix

Check the operation of the EGR system for clogging
Diagnose the catalytic converter
Test NOx sensors
Check the urea injection system (if equipped)
Update engine ECU firmware

Related codes

P229F P2200 P2BAC