U18C4
Lost Communication With Video Processing Control Module On Low Speed CAN Bus
U18C4 is an OBD-II diagnostic trouble code meaning: Lost Communication With Video Processing Control Module On Low Speed CAN Bus. Common causes: open or short circuit in can circuit, video processing module malfunction. Estimated repair cost: $56–278.
Symptoms
- Rear view cameras don't work
- There is no image from all-round viewing systems
- Error message on the dashboard
- Incorrect operation of driver assistance systems
- Blinking or disappearing images from cameras
Causes
- Open or short circuit in CAN circuit
- Video processing module malfunction
- Module power problems
- Corrosion or oxidation of contacts
- Software failure in the module
How to Fix
- Check the integrity of the CAN wiring harness
- Check the power and ground of the video processing module
- Inspect and clean connector contacts
- Reflash the module
- If necessary, replace the video processing module
Related codes
FAQ
What does the U18C4 code mean?
U18C4 is an OBD-II diagnostic trouble code that indicates: Lost Communication With Video Processing Control Module On Low Speed CAN Bus
What causes a U18C4 error code?
The most common causes of U18C4 include: Open or short circuit in CAN circuit; Video processing module malfunction; Module power problems; Corrosion or oxidation of contacts.
How do I fix a U18C4 diagnostic trouble code?
To fix U18C4: Check the integrity of the CAN wiring harness. Check the power and ground of the video processing module. Inspect and clean connector contacts. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U18C4?
Yes, but get it checked soon
How much does it cost to fix U18C4?
The estimated repair cost for U18C4 is $56–278. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat