U1290 – Module Communication Fault

The ODBII code U1290 indicates a “Module Communication Fault,” which means there is a communication issue between the vehicle’s control modules, often due to a fault in the wiring, connectors, or the modules themselves.

The severity of ODBII code U1290 is generally considered moderate.

Common Causes For: U1287 U1287: “Module Communication Failure”

• Faulty wiring or connectors
• Failed or malfunctioning control module
• Corroded or damaged pins in connectors
• Poor ground connections
• Intermittent electrical issues
• Software or firmware issues in modules
• Low battery voltage or power supply issues
• Communication network faults (e.g., CAN bus issues)

Common misdiagnosis for U1290 U1290: “Module Communication Fault”

• Faulty wiring or connectors
• Defective control module
• Low battery voltage
• Intermittent electrical issues
• Software glitches or outdated firmware
• Grounding issues
• Communication network problems (e.g., CAN bus issues)
• Sensor malfunctions
• Corroded terminals
• Incorrectly configured aftermarket accessories

Common Troubleshooting Steps

The OBD-II code U1290 indicates a “Module Communication Fault,” which typically means that there is a communication issue between the vehicle’s control modules. Here are some common troubleshooting steps to diagnose and resolve this issue:

• Check for Other Codes: Use an OBD-II scanner to check for any other trouble codes that may be present. Sometimes, other codes can provide additional context for the U1290 code.
• Inspect Wiring and Connectors:
• Visually inspect the wiring and connectors associated with the affected modules. Look for signs of damage, corrosion, or loose connections.
• Pay special attention to the ground connections, as poor grounding can lead to communication issues.
• Check Power Supply: Ensure that the affected modules are receiving the proper voltage. Use a multimeter to check the power supply to the modules.
• Test Communication Lines:
• Use a scan tool to check the communication between modules. If possible, perform a network test to see if the modules can communicate with each other.
• Check for short circuits or open circuits in the communication lines (CAN bus, LIN bus, etc.).
• Inspect Modules:
• If you suspect a specific module is causing the issue, consider testing or replacing that module.
• Ensure that the module is properly programmed and configured for your vehicle.
• Check for Software Updates: Sometimes, communication issues can be resolved with a software update. Check with the manufacturer for any available updates for the vehicle’s control modules.
• Clear Codes and Test Drive: After performing the above checks and repairs, clear the trouble codes using the OBD-II scanner and take the vehicle for a test drive to see if the code returns.
• Consult Technical Service Bulletins (TSBs): Check for any TSBs related to the U1290 code for your specific vehicle make and model. Manufacturers may have specific recommendations or known issues that can help in troubleshooting.
• Professional Diagnosis: If the issue persists after performing the above steps, consider seeking help from a professional mechanic or dealership. They may have specialized diagnostic tools and experience with your vehicle’s specific systems. By following these steps, you should be able to identify and resolve the underlying issue causing the U1290 code.