U1159 – Lost Communication with Instrument Cluster (IC) Control Module.

The ODBII code U1159 indicates that there is a communication failure between the vehicle’s control module and the instrument cluster, meaning the control module is unable to receive or send data to the instrument cluster.

The severity of ODBII code U1159 is generally considered moderate to severe.

Common Causes For: U1158 U1158: Instrument Cluster Communication Loss

• Faulty Instrument Cluster Control Module
• Damaged wiring or connectors
• Poor ground connections
• Faulty CAN bus communication
• Corroded terminals
• Malfunctioning power supply to the module
• Software issues or bugs in the module
• Intermittent electrical issues

Common misdiagnosis for U1159 Lost Communication with Instrument Cluster (IC) Control Module.

• Faulty Instrument Cluster
• Bad Wiring or Connectors
• Faulty Body Control Module (BCM)
• Power Supply Issues
• Faulty CAN Bus Communication
• Defective ECU (Engine Control Unit)
• Grounding Issues
• Software Glitches or Updates Needed

Common Troubleshooting Steps

When dealing with the OBD-II code U1159, which indicates “Lost Communication with Instrument Cluster (IC) Control Module,” there are several common troubleshooting steps you can follow to diagnose and potentially resolve the issue. Here’s a structured approach:

• Check for Additional Codes: Use an OBD-II scanner to check for any other trouble codes that may be present. This can provide more context and help identify related issues.
• Inspect the Instrument Cluster: **Visual Inspection: Check the instrument cluster for any visible damage, such as cracks or burnt components.
• **Connections: Ensure that the connectors to the instrument cluster are secure and free of corrosion or damage.
• Check Wiring and Connectors: Inspect the wiring harnesses and connectors leading to the instrument cluster for any signs of wear, fraying, or damage.
• Look for loose connections or broken wires that could interrupt communication.
• Test the Instrument Cluster: If possible, perform a bench test on the instrument cluster to ensure it is functioning correctly.
• If you have access to a known good instrument cluster, consider swapping it temporarily to see if the issue persists.
• Check for Power and Ground: Verify that the instrument cluster is receiving the correct voltage and ground. Use a multimeter to check for power at the cluster’s connector.
• Ensure that the ground connections are solid and free of corrosion.
• Inspect the CAN Bus System: The instrument cluster typically communicates over the CAN (Controller Area Network) bus. Check for any issues with the CAN bus wiring or other modules on the bus.
• Look for any short circuits or open circuits in the CAN bus wiring.
• Check for Software Issues: Sometimes, a software glitch can cause communication issues. Check if there are any available software updates for the vehicle’s modules.
• If applicable, consider performing a reset or reprogramming of the instrument cluster.
• Scan for Module Communication: Use a professional-grade scan tool to check the communication between the instrument cluster and other modules. This can help identify if the issue is isolated to the cluster or if other modules are affected.
• Inspect Related Modules: Check other modules that communicate with the instrument cluster, such as the Body Control Module (BCM) or Engine Control Module (ECM), for any faults or communication issues.
• Consult Technical Service Bulletins (TSBs): Look for any TSBs related to the U1159 code or instrument cluster issues for your specific vehicle make and model. Manufacturers may have known fixes or recommendations.1
• Professional Diagnosis: If the issue persists after performing the above steps, consider seeking help from a professional mechanic or dealership. They may have access to specialized diagnostic tools and resources.Conclusion By following these troubleshooting steps, you can systematically identify and address the cause of the U1159 code. Always ensure safety precautions are taken when working on vehicle electronics, and consult the vehicle’s service manual for specific procedures related to your make and model.