U04A0
Invalid Data Received From Engine Coolant Pump Control Module
U04A0 is an OBD-II diagnostic trouble code meaning: Invalid Data Received From Engine Coolant Pump Control Module. Common causes: coolant pump control module malfunction, problems with wiring or connectors. Estimated repair cost: $56–167.
Symptoms
- Check Engine light comes on
- Reduced engine power
- Engine overheating
- Unstable operation of the cooling system
- Errors in other related systems
Causes
- Coolant pump control module malfunction
- Problems with wiring or connectors
- Coolant pump malfunction
- CAN bus problems
- Software error in the ECU
How to Fix
- Check the condition of the coolant pump
- Check the integrity of wiring and connectors
- Diagnose the pump control module
- Check the functionality of the CAN bus
- Update ECU software if necessary
Related codes
Error U04A0 by Vehicle Brand
FAQ
What does the U04A0 code mean?
U04A0 is an OBD-II diagnostic trouble code that indicates: Invalid Data Received From Engine Coolant Pump Control Module
What causes a U04A0 error code?
The most common causes of U04A0 include: Coolant pump control module malfunction; Problems with wiring or connectors; Coolant pump malfunction; CAN bus problems.
How do I fix a U04A0 diagnostic trouble code?
To fix U04A0: Check the condition of the coolant pump. Check the integrity of wiring and connectors. Diagnose the pump control module. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U04A0?
Limited driving only, diagnose soon
How much does it cost to fix U04A0?
The estimated repair cost for U04A0 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat