P249E
Closed Loop Reductant Injection Control At Limit - Flow Too High
P249E is an OBD-II diagnostic trouble code meaning: Closed Loop Reductant Injection Control At Limit - Flow Too High. Common causes: reagent injection nozzle malfunction, reagent leak in the scr system. Estimated repair cost: $56–222.
Symptoms
- Check Engine light comes on
- Reduced engine power
- Increased consumption of AdBlue reagent
- Ammonia smell
- Possible transition to emergency mode
Causes
- Reagent injection nozzle malfunction
- Reagent leak in the SCR system
- NOx sensor malfunction
- Problems with the reagent pump
- Errors in ECU software
How to Fix
- Check the system for reagent leaks
- Diagnose the reagent injection nozzle
- Check the operation of the AdBlue supply pump
- Test NOx sensors
- Update ECU software if necessary
Related codes
Error P249E by Vehicle Brand
FAQ
What does the P249E code mean?
P249E is an OBD-II diagnostic trouble code that indicates: Closed Loop Reductant Injection Control At Limit - Flow Too High
What causes a P249E error code?
The most common causes of P249E include: Reagent injection nozzle malfunction; Reagent leak in the SCR system; NOx sensor malfunction; Problems with the reagent pump.
How do I fix a P249E diagnostic trouble code?
To fix P249E: Check the system for reagent leaks. Diagnose the reagent injection nozzle. Check the operation of the AdBlue supply pump. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P249E?
Yes, but get it checked soon
How much does it cost to fix P249E?
The estimated repair cost for P249E is $56–222. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat