P214B

SCR NOx Catalyst Inlet Temperature Too High During Particulate Filter Regeneration

Severity

🔴 High

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$56–278 (est.)

Symptoms

Check Engine light comes on
Reduced engine power
Increased fuel consumption
Unusual exhaust smell
SCR system error message on dashboard

Causes

SCR temperature sensor malfunction
Problems with the AdBlue injection system
Clogged or damaged SCR catalyst
Exhaust gas recirculation (EGR) system malfunction
ECU software error

How to Fix

Diagnostics and testing of SCR temperature sensors
Checking the AdBlue injection system for leaks or blockages
Inspect the SCR catalyst for damage
Checking and cleaning the EGR system
Updating the ECU software if necessary

Related codes

P20EE P20EA P229F