U0093
Vehicle Communication Bus H Performance
U0093 is an OBD-II diagnostic trouble code meaning: Vehicle Communication Bus H Performance. Common causes: damage to can bus wiring, poor contact in connectors. Estimated repair cost: $6–56.
Symptoms
- Incorrect operation of various vehicle systems
- The Check Engine light comes on
- Problems starting the engine
- Lost connection with some modules
- Dashboard malfunctions
Causes
- Damage to CAN bus wiring
- Poor contact in connectors
- Fault in one of the modules connected to the bus
- Short circuit in the circuit
- Problems with module power supply
How to Fix
- Check the integrity of the CAN bus wiring
- Inspect and clean all connectors
- Check power supply and grounding of modules
- Diagnose each module connected to the bus
- Replace damaged wires or faulty modules
Related codes
Error U0093 by Vehicle Brand
FAQ
What does the U0093 code mean?
U0093 is an OBD-II diagnostic trouble code that indicates: Vehicle Communication Bus H Performance
What causes a U0093 error code?
The most common causes of U0093 include: Damage to CAN bus wiring; Poor contact in connectors; Fault in one of the modules connected to the bus; Short circuit in the circuit.
How do I fix a U0093 diagnostic trouble code?
To fix U0093: Check the integrity of the CAN bus wiring. Inspect and clean all connectors. Check power supply and grounding of modules. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U0093?
Yes, but get it checked soon
How much does it cost to fix U0093?
The estimated repair cost for U0093 is $6–56. Actual cost depends on your vehicle, location, and labor rates.
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