U0065
Vehicle Communication Bus E Performance
U0065 is an OBD-II diagnostic trouble code meaning: Vehicle Communication Bus E Performance. Common causes: broken or damaged can bus wires, corrosion or oxidation of contacts in connectors. Estimated repair cost: $17–167.
Symptoms
- The Check Engine light comes on
- Incorrect operation of various vehicle systems
- Lost connection with diagnostic equipment
- Dashboard malfunctions
Causes
- Broken or damaged CAN bus wires
- Corrosion or oxidation of contacts in connectors
- Malfunction of one of the vehicle's electronic modules
- Problems with power supply of electronic modules
- Software failures in modules
How to Fix
- Check the integrity of the CAN bus wiring
- Inspect and clean the contacts in the CAN bus connectors
- Check power supply and grounding of electronic modules
- Carry out diagnostics of all modules connected to the CAN bus
Related codes
Error U0065 by Vehicle Brand
FAQ
What does the U0065 code mean?
U0065 is an OBD-II diagnostic trouble code that indicates: Vehicle Communication Bus E Performance
What causes a U0065 error code?
The most common causes of U0065 include: Broken or damaged CAN bus wires; Corrosion or oxidation of contacts in connectors; Malfunction of one of the vehicle's electronic modules; Problems with power supply of electronic modules.
How do I fix a U0065 diagnostic trouble code?
To fix U0065: Check the integrity of the CAN bus wiring. Inspect and clean the contacts in the CAN bus connectors. Check power supply and grounding of electronic modules. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U0065?
Do not drive — repair immediately
How much does it cost to fix U0065?
The estimated repair cost for U0065 is $17–167. Actual cost depends on your vehicle, location, and labor rates.
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