U040D
Invalid Data Received From Turbocharger/Supercharger Control Module A
U040D is an OBD-II diagnostic trouble code meaning: Invalid Data Received From Turbocharger/Supercharger Control Module A. Common causes: malfunction of the turbocharger control module, open or short circuit in the communication circuit. Estimated repair cost: $56–278.
Symptoms
- Check Engine light comes on
- Loss of engine power
- Deterioration in acceleration dynamics
- Irregular operation of the turbocharger
- Possible transition to emergency operation
Causes
- Malfunction of the turbocharger control module
- Open or short circuit in the communication circuit
- Problems with connecting connectors
- Engine control unit malfunction
- Software errors in the control module
How to Fix
- Check the integrity of the wiring harness to the control module
- Check the condition of connectors and contacts
- Scan the control module for errors
- If necessary, replace the turbocharger control module
- Update ECU software
Related codes
Error U040D by Vehicle Brand
FAQ
What does the U040D code mean?
U040D is an OBD-II diagnostic trouble code that indicates: Invalid Data Received From Turbocharger/Supercharger Control Module A
What causes a U040D error code?
The most common causes of U040D include: Malfunction of the turbocharger control module; Open or short circuit in the communication circuit; Problems with connecting connectors; Engine control unit malfunction.
How do I fix a U040D diagnostic trouble code?
To fix U040D: Check the integrity of the wiring harness to the control module. Check the condition of connectors and contacts. Scan the control module for errors. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U040D?
Limited driving only, diagnose soon
How much does it cost to fix U040D?
The estimated repair cost for U040D is $56–278. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat