P20E9
Reductant Pressure Too High
P20E9 is an OBD-II diagnostic trouble code meaning: Reductant Pressure Too High. Common causes: adblue pump malfunction, blockage or restriction in scr system tubes. Estimated repair cost: $56–278.
Symptoms
- Check Engine Light Is On
- Reduced engine power
- Possible SCR error messages on the dashboard
- Increased consumption of AdBlue reagent
- Noticeable reagent leaks in the system
Causes
- AdBlue pump malfunction
- Blockage or restriction in SCR system tubes
- Problems with the reagent pressure sensor
- Pressure control valve malfunction
- SCR control module software error
How to Fix
- Diagnostics of the SCR system using a scanner
- Checking the reagent pressure sensor
- Inspect the system for leaks or blockages
- Replacing a faulty pump or valve if necessary
- Error reset and system test after repair
Related codes
Error P20E9 by Vehicle Brand
FAQ
What does the P20E9 code mean?
P20E9 is an OBD-II diagnostic trouble code that indicates: Reductant Pressure Too High
What causes a P20E9 error code?
The most common causes of P20E9 include: AdBlue pump malfunction; Blockage or restriction in SCR system tubes; Problems with the reagent pressure sensor; Pressure control valve malfunction.
How do I fix a P20E9 diagnostic trouble code?
To fix P20E9: Diagnostics of the SCR system using a scanner. Checking the reagent pressure sensor. Inspect the system for leaks or blockages. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P20E9?
Yes, but get it checked soon
How much does it cost to fix P20E9?
The estimated repair cost for P20E9 is $56–278. Actual cost depends on your vehicle, location, and labor rates.
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