P20F1
SCR NOx Pre-Catalyst - Over Temperature Bank 2
P20F1 is an OBD-II diagnostic trouble code meaning: SCR NOx Pre-Catalyst - Over Temperature Bank 2. Common causes: scr temperature sensor malfunction, clogged or damaged catalytic converter. Estimated repair cost: $33–167.
Symptoms
- Check Engine light comes on
- Reduced engine power
- Increased fuel consumption
- Unusual odors from the exhaust system
- SCR system error message on dashboard
Causes
- SCR temperature sensor malfunction
- Clogged or damaged catalytic converter
- Problems with AdBlue supply
- AdBlue injection system malfunction
- Temperature sensor wiring harness damaged
How to Fix
- Check the SCR temperature sensor readings
- Inspect the AdBlue injection system for leaks or blockages
- Check the condition of the catalytic converter
- Diagnose and, if necessary, replace the temperature sensor
- Check the integrity of the sensor wiring harness
Related codes
Error P20F1 by Vehicle Brand
FAQ
What does the P20F1 code mean?
P20F1 is an OBD-II diagnostic trouble code that indicates: SCR NOx Pre-Catalyst - Over Temperature Bank 2
What causes a P20F1 error code?
The most common causes of P20F1 include: SCR temperature sensor malfunction; Clogged or damaged catalytic converter; Problems with AdBlue supply; AdBlue injection system malfunction.
How do I fix a P20F1 diagnostic trouble code?
To fix P20F1: Check the SCR temperature sensor readings. Inspect the AdBlue injection system for leaks or blockages. Check the condition of the catalytic converter. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P20F1?
Yes, but get it checked soon
How much does it cost to fix P20F1?
The estimated repair cost for P20F1 is $33–167. Actual cost depends on your vehicle, location, and labor rates.
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