OBD2 code U0181: 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
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 U0181
What does code U0181 mean? ▾
OBD2 code U0181: Loss of communication with module. Loss of communication with a module.
What are the symptoms of code U0181? ▾
Code U0181 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 U0181? ▾
The most common causes of code U0181 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 U0181? ▾
Yes, code U0181 is critical (Critical). Avoid driving and consult a professional promptly to prevent major damage.
How do I fix code U0181? ▾
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.