U0068
Vehicle Communication Bus E (+) High
U0068 is an OBD-II diagnostic trouble code meaning: Vehicle Communication Bus E (+) High. Common causes: damage to can bus wiring, fault in one of the modules connected to the bus. Estimated repair cost: $6–56.
Symptoms
- Incorrect operation of the vehicle's electronic systems
- The Check Engine light comes on
- Loss of communication with some control units
- Problems starting the engine
- Dashboard malfunctions
Causes
- Damage to CAN bus wiring
- Fault in one of the modules connected to the bus
- Problems with module power supply
- Short circuit in the CAN bus circuit
- Corrosion of contacts in connectors
How to Fix
- Check the integrity of the CAN bus wiring
- Check the voltage on the CAN bus
- Disable the modules one by one to identify the faulty one.
- Check connectors and contacts for corrosion
- Replace damaged components if necessary
Related codes
Error U0068 by Vehicle Brand
FAQ
What does the U0068 code mean?
U0068 is an OBD-II diagnostic trouble code that indicates: Vehicle Communication Bus E (+) High
What causes a U0068 error code?
The most common causes of U0068 include: Damage to CAN bus wiring; Fault in one of the modules connected to the bus; Problems with module power supply; Short circuit in the CAN bus circuit.
How do I fix a U0068 diagnostic trouble code?
To fix U0068: Check the integrity of the CAN bus wiring. Check the voltage on the CAN bus. Disable the modules one by one to identify the faulty one.. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U0068?
Yes, but get it checked soon
How much does it cost to fix U0068?
The estimated repair cost for U0068 is $6–56. Actual cost depends on your vehicle, location, and labor rates.
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