U2705 – Invalid Data Received from Vehicle Control Module.

The ODBII code U2705 indicates that the vehicle’s control module has received invalid or corrupted data from another control module, which may affect communication and functionality.

The severity of ODBII code U2705 is generally considered moderate.

Common Causes For: U2704 U2704: Control Module Communication Bus Failure

• Faulty vehicle control module (VCM)
• Poor or damaged wiring/connectors
• Corrupted software or firmware in the VCM
• Communication issues between modules
• Low battery voltage or electrical issues
• Faulty or incompatible aftermarket components
• Grounding issues in the electrical system

Common misdiagnosis for U2705 Invalid Data Received from Vehicle Control Module.

• Faulty Vehicle Control Module (VCM)
• Wiring issues or shorts in the communication lines
• Faulty sensors or actuators
• Incorrectly programmed or updated software
• Issues with the power supply to the VCM
• Problems with other control modules in the vehicle
• Corrupted data or communication errors in the CAN bus system

Common Troubleshooting Steps

The OBD-II code U2705 indicates that there is an issue with the communication between the vehicle’s control modules, specifically that invalid data has been received from a vehicle control module. 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. Sometimes, multiple codes can provide more context about the issue.
• Inspect Wiring and Connectors:
• Check the wiring and connectors related to the control modules for any signs of damage, corrosion, or loose connections.
• Pay special attention to the wiring harnesses that connect the affected control module to the rest of the vehicle.
• Verify Power and Ground:
• Ensure that the control module has the proper power supply and ground connections. Use a multimeter to check voltage and ground continuity.
• Check for Software Updates:
• Sometimes, the issue can be resolved by updating the software of the control module. Check with the manufacturer for any available updates.
• Inspect Control Module:
• If the wiring and connections are good, the control module itself may be faulty. Consider testing or replacing the module if necessary.
• Clear Codes and Test Drive:
• After performing any repairs or inspections, clear the trouble codes using the OBD-II scanner and take the vehicle for a test drive to see if the code returns.
• Check for Interference:
• Ensure that there are no aftermarket devices or modifications that could be interfering with the communication between control modules.
• Consult Technical Service Bulletins (TSBs):
• Look for any TSBs related to the specific make and model of the vehicle. Manufacturers may have issued guidance on common issues related to U2705.
• Professional Diagnosis:
• If the issue persists after performing the above steps, it may be necessary to consult a professional mechanic or technician who has experience with the specific vehicle and its control systems. By following these steps, you can systematically diagnose and potentially resolve the U2705 code.