U0041

Symptoms

• Check Engine Light Is On
• Malfunctions of various electronic systems
• Loss of communication with one or more modules
• Incorrect dashboard readings
• Problems with diagnostics via OBD-II connector

Causes

• Break or short circuit in the communication bus line
• Damage to connectors or corrosion of contacts
• Fault in one of the modules connected to the bus
• Problems with module power supply
• Module software mismatch

How to Fix

1. Check the integrity of the communication bus wiring
2. Inspect the condition of connectors and contacts
3. Diagnose modules connected to the bus
4. Check power supply and grounding of modules
5. Update module software if necessary

Related codes

Error U0041 by Vehicle Brand