U1352 – Control Module Communication Failure

The ODBII code U1352 indicates a “Control Module Communication Failure,” meaning there is a problem with communication between the vehicle’s control modules, which can affect various systems and functions.

The severity of ODBII code U1352 is moderate to severe.

Common Causes For: U1351 Manufacturer Specific” code, which typically indicates a communication issue between modules in the vehicle’s network.

• Faulty control module
• Poor electrical connections
• Damaged wiring harness
• Corroded connectors
• Software issues or bugs
• Low battery voltage
• Faulty or malfunctioning sensors
• Interference from aftermarket devices
• Communication network issues (CAN bus problems)

Common misdiagnosis for U1352 U1352: “Control Module Communication Failure”

• Faulty control module
• Wiring issues
• Poor ground connections
• Corrupted software/firmware
• Faulty sensors
• Battery or power supply problems
• Intermittent connection issues
• Communication network faults (e.g., CAN bus issues)

Common Troubleshooting Steps

The OBD-II code U1352 indicates a “Control Module Communication Failure.” This code typically suggests that there is a problem with communication 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, multiple codes can provide more context for the issue.
• Inspect Wiring and Connectors:
• Visually inspect the wiring and connectors associated with the control modules. Look for signs of damage, corrosion, or loose connections.
• Pay special attention to the wiring harnesses that connect the modules, as these can be prone to wear and tear.
• Check Power and Ground:
• Ensure that the control modules are receiving the proper power supply. Use a multimeter to check voltage at the module connectors.
• Verify that the ground connections are secure and free of corrosion.
• Test Control Modules:
• If possible, test the affected control module(s) to ensure they are functioning correctly. This may involve using specialized diagnostic tools or swapping with a known good module.
• Inspect the CAN Bus:
• The communication between control modules often occurs over a Controller Area Network (CAN) bus. Check for any issues with the CAN bus wiring, such as shorts or opens.
• Use a CAN bus scanner to monitor the communication and identify any anomalies.
• Check for Software Updates:
• Sometimes, control modules may require software updates to resolve communication issues. Check with the manufacturer for any available updates.
• 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 reappears.
• Consult Service Manual:
• Refer to the vehicle’s service manual for specific diagnostic procedures related to the U1352 code and the control modules involved.
• Professional Diagnosis:
• If the issue persists after performing the above steps, consider seeking help from a professional mechanic or dealership with experience in diagnosing control module communication issues. By following these steps, you can systematically identify and resolve the underlying cause of the U1352 code.