OBD2 Code U0440: Invalid Module Data
Invalid data from a module.
Detected Root Component
Network Component
Observed Symptoms
- Loss of communication between modules
- Dashboard errors
Possible Causes
- Defective sensor
- Incorrect module configuration
- Damaged CAN wiring
- Damaged wiring
Tools Required
Interactive Diagnostic
Answer each question to calculate your diagnostic score.
No steps available.
Diagnostic Result
Score threshold guide
Was this diagnostic helpful?
Parts likely to be the cause (Moteur (général))
Moteur (général)
Photo d'illustration : Moteur (général)
© DTC-Logic.com
Click on an image to enlarge
Frequently asked questions about code U0440
What does code U0440 mean? ▾
OBD2 Code U0440: Invalid Module Data. Invalid data from a module.
What are the symptoms of code U0440? ▾
Code U0440 may cause: Loss of communication between modules, Dashboard errors. The intensity of these symptoms varies depending on the vehicle and driving conditions.
What causes code U0440? ▾
The most common causes of code U0440 are: Defective sensor, Incorrect module configuration, Damaged CAN wiring, Damaged wiring. A proper OBD2 diagnostic will pinpoint the exact cause.
Is it serious to drive with code U0440? ▾
Code U0440 has moderate severity (Warning). Short-term driving remains possible, but a prompt check is recommended to prevent worsening.
How do I fix code U0440? ▾
Start by reading the code with an OBD2 scanner, then follow the interactive decision tree on this page. Priority causes to check: Defective sensor, Incorrect module configuration, Damaged CAN wiring, Damaged wiring. Difficulty: Medium · Estimated time: 30-60min.