U1355 – Manufacturer Specific code, which typically indicates a communication issue between modules in the vehicle’s network.

The ODBII code U1355 indicates a communication issue between modules in the vehicle’s network, often related to a failure in data transmission or a malfunction in one of the control modules.

The severity of ODBII code U1355 is generally considered moderate to severe, as it indicates a communication issue that can affect multiple systems in the vehicle.

Common Causes For: U1354 U1354: “Control Module Communication Failure”

• Faulty wiring or connectors
• Malfunctioning control module
• Corroded or damaged pins
• Poor ground connections
• Intermittent electrical issues
• Software glitches or outdated firmware
• Faulty CAN bus communication
• Battery voltage issues
• Aftermarket modifications or installations
• Environmental factors (moisture, temperature) affecting connections

Common misdiagnosis for U1355 Manufacturer Specific” code, which typically indicates a communication issue between modules in the vehicle’s network.

• Faulty wiring or connectors
• Defective control module
• Software issues or outdated firmware
• Battery or power supply problems
• Grounding issues
• Intermittent faults in communication lines
• Incorrectly installed aftermarket accessories
• Corrupted data or configuration settings
• Faulty sensors or actuators
• Other unrelated DTCs leading to confusion

Common Troubleshooting Steps

The OBD-II code U1355 is a manufacturer-specific code that generally indicates a communication issue between modules in a vehicle’s network. 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 additional trouble codes. Addressing other codes may resolve the U1355 issue.
• Inspect Wiring and Connectors: **Visual Inspection: Check the wiring harnesses and connectors related to the affected modules for any signs of damage, corrosion, or loose connections.
• **Repair or Replace: Repair any damaged wires or connectors and ensure all connections are secure.
• Check Module Communication: **Network Scan: Use a scan tool to check if all modules are communicating properly. Some scan tools can perform a network test to identify which module is not responding.
• **Module Functionality: If a specific module is not communicating, it may be faulty and require replacement.
• Inspect Ground Connections: Ensure that all ground connections for the affected modules are clean and secure. Poor ground connections can lead to communication issues.
• Check Power Supply: Verify that the affected modules are receiving the correct voltage. Use a multimeter to check the power supply to the modules.
• Reset the Codes: After performing any repairs, clear the trouble codes using the OBD-II scanner and take the vehicle for a test drive to see if the code returns.
• Update Software/Firmware: Check if there are any software updates available for the vehicle’s modules. Sometimes, manufacturers release updates to fix communication issues.
• Perform a Hard Reset: Disconnect the vehicle’s battery for a few minutes to reset the modules. Reconnect and check if the code reappears.
• Consult Technical Service Bulletins (TSBs): Look for any TSBs related to the U1355 code for your specific vehicle make and model. Manufacturers may have documented solutions for known issues.
• Professional Diagnosis: If the issue persists after performing the above steps, consider seeking help from a professional mechanic or dealership. They may have specialized tools and knowledge to diagnose complex communication issues.Additional Tips: – Always refer to the vehicle’s service manual for specific diagnostic procedures and wiring diagrams. – Be cautious when working with electrical systems to avoid causing further damage. By following these troubleshooting steps, you can systematically identify and resolve the communication issue indicated by the U1355 code.