U0006
High Speed CAN Communication Bus (-) Open
U0006 is an OBD-II diagnostic trouble code meaning: High Speed CAN Communication Bus (-) Open. Common causes: physical damage to can bus wires, corrosion of contacts in connectors. Estimated repair cost: $6–56.
Symptoms
- Check Engine light comes on
- Unstable engine operation
- Gear shifting problems
- Security systems failure
- Errors in other vehicle systems
Causes
- Physical damage to CAN bus wires
- Corrosion of contacts in connectors
- Problems with the ECU
- Malfunction of CAN bus terminators
- Break in the wiring harness
How to Fix
- Check the integrity of the CAN bus wires
- Inspect connectors for corrosion
- Check the resistance of the terminators
- Scan all ECUs for errors
- If necessary, replace damaged wires or connectors
Related codes
Error U0006 by Vehicle Brand
FAQ
What does the U0006 code mean?
U0006 is an OBD-II diagnostic trouble code that indicates: High Speed CAN Communication Bus (-) Open
What causes a U0006 error code?
The most common causes of U0006 include: Physical damage to CAN bus wires; Corrosion of contacts in connectors; Problems with the ECU; Malfunction of CAN bus terminators.
How do I fix a U0006 diagnostic trouble code?
To fix U0006: Check the integrity of the CAN bus wires. Inspect connectors for corrosion. Check the resistance of the terminators. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U0006?
Do not drive — repair immediately
How much does it cost to fix U0006?
The estimated repair cost for U0006 is $6–56. Actual cost depends on your vehicle, location, and labor rates.
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