U05A3
Invalid Data Received From Reductant Quality Module
U05A3 is an OBD-II diagnostic trouble code meaning: Invalid Data Received From Reductant Quality Module. Common causes: reagent quality module malfunction, problems with the urea concentration sensor. Estimated repair cost: $56–167.
Symptoms
- Check Engine Light Is On
- Possible engine power limitation
- Increased consumption of AdBlue reagent
- Unusual reagent level or quality readings
- Problems starting the SCR system
Causes
- Reagent quality module malfunction
- Problems with the urea concentration sensor
- Open or short circuit in wiring
- Poor quality or unsuitable AdBlue reagent
- Software error in control module
How to Fix
- Check the quality and level of AdBlue reagent
- Diagnose the reagent quality module
- Check the integrity of wiring and connectors
- Scan the system for other errors
- Update module software if necessary
- Repair only from an authorized dealer
Related codes
Error U05A3 by Vehicle Brand
FAQ
What does the U05A3 code mean?
U05A3 is an OBD-II diagnostic trouble code that indicates: Invalid Data Received From Reductant Quality Module
What causes a U05A3 error code?
The most common causes of U05A3 include: Reagent quality module malfunction; Problems with the urea concentration sensor; Open or short circuit in wiring; Poor quality or unsuitable AdBlue reagent.
How do I fix a U05A3 diagnostic trouble code?
To fix U05A3: Check the quality and level of AdBlue reagent. Diagnose the reagent quality module. Check the integrity of wiring and connectors. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U05A3?
Yes, but get it checked soon
How much does it cost to fix U05A3?
The estimated repair cost for U05A3 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat