P20EC
SCR NOx Catalyst - Over Temperature Bank 1
P20EC is an OBD-II diagnostic trouble code meaning: SCR NOx Catalyst - Over Temperature Bank 1. Common causes: scr temperature sensor malfunction, problems with the urea injection system (adblue). Estimated repair cost: $56–389.
Symptoms
- Check Engine Light Illuminates
- Reduced engine power
- Possible transition to emergency mode
- Increased fuel consumption
- Noticeable increase in exhaust system temperature
Causes
- SCR temperature sensor malfunction
- Problems with the urea injection system (AdBlue)
- Clogged or damaged SCR catalyst
- SCR control module malfunction
- Problems with sensor wiring
How to Fix
- Check the level and quality of AdBlue reagent
- Diagnose the urea injection system
- Check the condition of the SCR catalyst
- Test temperature sensors and their circuits
- Scan for errors in the SCR module
Related codes
Error P20EC by Vehicle Brand
FAQ
What does the P20EC code mean?
P20EC is an OBD-II diagnostic trouble code that indicates: SCR NOx Catalyst - Over Temperature Bank 1
What causes a P20EC error code?
The most common causes of P20EC include: SCR temperature sensor malfunction; Problems with the urea injection system (AdBlue); Clogged or damaged SCR catalyst; SCR control module malfunction.
How do I fix a P20EC diagnostic trouble code?
To fix P20EC: Check the level and quality of AdBlue reagent. Diagnose the urea injection system. Check the condition of the SCR catalyst. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P20EC?
Limited driving only, diagnose soon
How much does it cost to fix P20EC?
The estimated repair cost for P20EC is $56–389. Actual cost depends on your vehicle, location, and labor rates.
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