P20F2
SCR NOx Catalyst Efficiency Below Threshold Bank 2
P20F2 is an OBD-II diagnostic trouble code meaning: SCR NOx Catalyst Efficiency Below Threshold Bank 2. Common causes: clogged or damaged scr catalyst, problems with the urea injection system (adblue). Estimated repair cost: $167–889.
Symptoms
- Check Engine light comes on
- Reduced engine power
- Possible transition to emergency mode
- Increased fuel consumption
- Unusual odors from the exhaust system
Causes
- Clogged or damaged SCR catalyst
- Problems with the urea injection system (AdBlue)
- NOx sensor malfunction
- Poor quality or lack of AdBlue reagent
- Problems with SCR control electronics
How to Fix
- Check the level and quality of AdBlue reagent
- Diagnose the urea injection system
- Check the condition of the SCR catalyst
- Test NOx sensors and their wiring
- If necessary, replace the SCR catalyst
Related codes
Error P20F2 by Vehicle Brand
FAQ
What does the P20F2 code mean?
P20F2 is an OBD-II diagnostic trouble code that indicates: SCR NOx Catalyst Efficiency Below Threshold Bank 2
What causes a P20F2 error code?
The most common causes of P20F2 include: Clogged or damaged SCR catalyst; Problems with the urea injection system (AdBlue); NOx sensor malfunction; Poor quality or lack of AdBlue reagent.
How do I fix a P20F2 diagnostic trouble code?
To fix P20F2: 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 P20F2?
Yes, but get it checked soon
How much does it cost to fix P20F2?
The estimated repair cost for P20F2 is $167–889. Actual cost depends on your vehicle, location, and labor rates.
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