U0090
Vehicle Communication Bus G (-) High
U0090 is an OBD-II diagnostic trouble code meaning: Vehicle Communication Bus G (-) High. Common causes: damage to communication bus wiring, poor contact in connectors. Estimated repair cost: $6–56.
Symptoms
- Loss of communication between vehicle modules
- Inoperative or incorrectly functioning systems
- Check Engine Light Illuminates
- Problems with diagnostics via OBD-II
Causes
- Damage to communication bus wiring
- Poor contact in connectors
- Electronic module malfunction
- Short circuit in the circuit
How to Fix
- Check the integrity of the communication bus wiring
- Inspect and clean connectors
- Check the condition of electronic modules
- Replace damaged wires or connectors
Related codes
Error U0090 by Vehicle Brand
FAQ
What does the U0090 code mean?
U0090 is an OBD-II diagnostic trouble code that indicates: Vehicle Communication Bus G (-) High
What causes a U0090 error code?
The most common causes of U0090 include: Damage to communication bus wiring; Poor contact in connectors; Electronic module malfunction; Short circuit in the circuit.
How do I fix a U0090 diagnostic trouble code?
To fix U0090: Check the integrity of the communication bus wiring. Inspect and clean connectors. Check the condition of electronic modules. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U0090?
Yes, but get it checked soon
How much does it cost to fix U0090?
The estimated repair cost for U0090 is $6–56. Actual cost depends on your vehicle, location, and labor rates.
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