U0076
Control Module Communication Bus D Off
U0076 is an OBD-II diagnostic trouble code meaning: Control Module Communication Bus D Off. Common causes: open or short circuit in the can bus wiring, corroded or damaged connectors. Estimated repair cost: $6–111.
Symptoms
- Check Engine Light Is On
- Incorrect operation of various vehicle systems
- Lack of communication with some modules during diagnostics
- Intermittent electronic malfunctions
Causes
- Open or short circuit in the CAN bus wiring
- Corroded or damaged connectors
- Malfunction of one of the control modules
- Problems with module power supply
- Damage to CAN bus terminators
How to Fix
- Visual inspection of CAN bus wiring and connectors
- Checking the resistance and integrity of CAN wires
- Diagnostics of modules connected to the bus
- Checking power supply and grounding of modules
- Replacing damaged CAN network components
Related codes
Error U0076 by Vehicle Brand
FAQ
What does the U0076 code mean?
U0076 is an OBD-II diagnostic trouble code that indicates: Control Module Communication Bus D Off
What causes a U0076 error code?
The most common causes of U0076 include: Open or short circuit in the CAN bus wiring; Corroded or damaged connectors; Malfunction of one of the control modules; Problems with module power supply.
How do I fix a U0076 diagnostic trouble code?
To fix U0076: Visual inspection of CAN bus wiring and connectors. Checking the resistance and integrity of CAN wires. Diagnostics of modules connected to the bus. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U0076?
Limited driving only, diagnose soon
How much does it cost to fix U0076?
The estimated repair cost for U0076 is $6–111. Actual cost depends on your vehicle, location, and labor rates.
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