OBD2 code U0140: Loss of communication with module
Loss of communication with a module.
Detected Root Component
Network Component
Observed Symptoms
- Loss of communication between modules
- Unresponsive module
- Dashboard errors
Possible Causes
- Damaged CAN wiring
- CAN bus short circuit module
- Damaged wiring
- Corroded connector
Tools Required
Interactive Diagnostic
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Diagnostic Result
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Parts likely to be the cause (Moteur (général))
Moteur (général)
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Frequently asked questions about code U0140
What does code U0140 mean? ▾
OBD2 code U0140: Loss of communication with module. Loss of communication with a module.
What are the symptoms of code U0140? ▾
Code U0140 may cause: Loss of communication between modules, Unresponsive module, Dashboard errors. The intensity of these symptoms varies depending on the vehicle and driving conditions.
What causes code U0140? ▾
The most common causes of code U0140 are: Damaged CAN wiring, CAN bus short circuit module, Damaged wiring, Corroded connector. A proper OBD2 diagnostic will pinpoint the exact cause.
Is it serious to drive with code U0140? ▾
Yes, code U0140 is critical (Critical). Avoid driving and consult a professional promptly to prevent major damage.
How do I fix code U0140? ▾
Start by reading the code with an OBD2 scanner, then follow the interactive decision tree on this page. Priority causes to check: Damaged CAN wiring, CAN bus short circuit module, Damaged wiring, Corroded connector. Difficulty: Medium · Estimated time: 30-60min.