U0094
Vehicle Communication Bus H (+) Open
U0094 is an OBD-II diagnostic trouble code meaning: Vehicle Communication Bus H (+) Open. Common causes: mechanical damage to can bus wires, corrosion or oxidation of contacts. Estimated repair cost: $6–56.
Symptoms
- Check Engine Light Is On
- Some systems do not work (climate control, multimedia, etc.)
- Communication errors in other modules
- Floating electrical faults
- The car may go into emergency mode
Causes
- Mechanical damage to CAN bus wires
- Corrosion or oxidation of contacts
- Malfunction of one of the CAN network modules
- Fuse box problems
- Incorrect connection of equipment after repair
How to Fix
- Check the integrity of the CAN bus wiring
- Inspect connectors and contacts for corrosion
- Check fuses associated with the CAN bus
- Diagnose modules connected to the CAN network
- Check resistance and voltage on CAN lines
Related codes
Error U0094 by Vehicle Brand
FAQ
What does the U0094 code mean?
U0094 is an OBD-II diagnostic trouble code that indicates: Vehicle Communication Bus H (+) Open
What causes a U0094 error code?
The most common causes of U0094 include: Mechanical damage to CAN bus wires; Corrosion or oxidation of contacts; Malfunction of one of the CAN network modules; Fuse box problems.
How do I fix a U0094 diagnostic trouble code?
To fix U0094: Check the integrity of the CAN bus wiring. Inspect connectors and contacts for corrosion. Check fuses associated with the CAN bus. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U0094?
Yes, but get it checked soon
How much does it cost to fix U0094?
The estimated repair cost for U0094 is $6–56. Actual cost depends on your vehicle, location, and labor rates.
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