U0093

Vehicle Communication Bus H Performance

Severity

🔴 High

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$6–56 (est.)

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

U0100 U0121 U0140