U1682 – Invalid Data Received from Vehicle Control Module.

The ODBII code U1682 indicates that the vehicle’s control module has received invalid or corrupted data from another control module, which may affect communication between modules.

The severity of ODBII code U1682 is generally considered moderate.

Common Causes For: U1681 U1681: “Module Communication Failure”

• Faulty Vehicle Control Module (VCM)
• Poor or damaged wiring/connectors
• Corrupted data communication
• Faulty or incompatible aftermarket components
• Issues with the OBDII port
• Software glitches or updates needed
• Low battery voltage or power supply issues

Common misdiagnosis for U1682 Invalid Data Received from Vehicle Control Module.

• Faulty Vehicle Control Module (VCM)
• Wiring issues or shorts in the communication lines
• Faulty sensors or actuators
• Corrupted software or firmware in the control modules
• Issues with the OBDII connector or communication port
• Problems with other control modules affecting communication
• Battery or power supply issues affecting module operation

Common Troubleshooting Steps

The OBD-II code U1682 indicates that there is an issue with the communication between the vehicle’s control modules, specifically that invalid data has been received from the 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 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 vehicle control module and any related 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 for Short Circuits: Use a multimeter to check for short circuits in the wiring harness. Ensure that there are no unintended connections between wires that could cause data corruption.
• Test the Control Module:
• If possible, test the vehicle control module (VCM) for proper operation. This may involve using specialized diagnostic tools or software.
• If the module is suspected to be faulty, consider replacing it or reprogramming it if necessary.
• Inspect the CAN Bus:
• The U1682 code often relates to issues with the Controller Area Network (CAN) bus. Check the CAN bus wiring for damage or disconnections.
• Use a CAN bus scanner to monitor the communication on the bus and identify any anomalies.
• Check for Software Updates: Sometimes, a software update from the manufacturer can resolve communication issues. Check if there are any available updates for the vehicle’s control modules.
• 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.
• Consult Technical Service Bulletins (TSBs): Check for any TSBs related to the specific make and model of the vehicle. Manufacturers may have issued guidance on common issues related to the U1682 code.
• Seek Professional Help: 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 troubleshooting steps, you can systematically identify and resolve the underlying issue causing the U1682 code.