U1370 – Invalid Data Received from Vehicle Control Module.

The ODBII code U1370 indicates that the vehicle’s control module has received invalid or corrupted data from another control module, suggesting a communication issue within the vehicle’s network.

The severity of ODBII code U1370 is generally considered moderate.

Common Causes For: U1369 U1369: “Module Communication Failure”

• Faulty Vehicle Control Module (VCM)
• Poor or damaged wiring/connectors
• Corrupted software or firmware in the VCM
• Communication issues between modules
• Grounding issues
• Interference from aftermarket devices
• Low battery voltage or power supply issues

Common misdiagnosis for U1370 Invalid Data Received from Vehicle Control Module.

• Faulty Vehicle Control Module (VCM)
• Wiring issues or short circuits
• Faulty sensors (e.g., wheel speed sensors)
• Communication issues between modules
• Corrupted software or firmware in the VCM
• Battery or power supply problems
• Faulty diagnostic tools or incorrect code reading

Common Troubleshooting Steps

The OBD-II code U1370 indicates that the vehicle’s control module has received invalid data from another control module. This can be caused by various issues, including communication problems between modules, wiring issues, or a malfunctioning control module. Here are some common troubleshooting steps to diagnose and resolve the U1370 code:

• Check for Additional Codes: Use an OBD-II scanner to check for any other trouble codes that may be present. Addressing related codes can help pinpoint 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 involved in the communication.
• Check for Ground Issues: Ensure that all control modules have a good ground connection. Poor grounding can lead to communication errors.
• Inspect Control Modules:
• If possible, check the specific control module that is reporting the U1370 code. Look for any signs of physical damage or water intrusion.
• If you have access to a known good module, consider swapping it to see if the problem persists.
• Test Communication Lines:
• Use a multimeter or an oscilloscope to test the communication lines (CAN bus) between the control modules. Look for proper voltage levels and signal integrity.
• Check for short circuits or open circuits in the communication lines.
• 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 inspections and repairs, clear the trouble codes and take the vehicle for a test drive to see if the code reappears.
• Consult Technical Service Bulletins (TSBs): Check for any TSBs related to the U1370 code for your specific vehicle make and model. Manufacturers may have issued guidance on common issues and fixes.
• 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. By following these steps, you can systematically diagnose and potentially resolve the U1370 code.