U2996 – Invalid Data Received from Vehicle Dynamics Control Module.

The ODBII code U2996 indicates that the vehicle’s control module has received invalid or corrupted data from the Vehicle Dynamics Control Module, which may affect the vehicle’s stability and handling systems.

The severity of ODBII code U2996 is generally considered moderate.

Common Causes For: U2995 Invalid Data Received from Vehicle Dynamics Control Module.

• Faulty Vehicle Dynamics Control Module (VDCM)
• Corrupted or damaged wiring/connectors
• Poor ground connections
• Communication issues between modules
• Software or firmware issues in the VDCM
• Faulty sensors related to vehicle dynamics
• Low battery voltage or electrical system issues
• Interference from aftermarket modifications or devices

Common misdiagnosis for U2996 Invalid Data Received from Vehicle Dynamics Control Module.

• ABS module failure
• Wheel speed sensor issues
• Faulty vehicle dynamics control module
• Wiring or connector problems
• Power supply issues
• Incorrectly calibrated sensors
• Software or firmware issues in the control module

Common Troubleshooting Steps

When dealing with the OBD-II code U2996, which indicates “Invalid Data Received from Vehicle Dynamics Control Module,” it’s important to follow a systematic approach to troubleshoot the issue. Here are some common troubleshooting steps:

• Check for Additional 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 related to the Vehicle Dynamics Control Module (VDCM). 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 the Vehicle Dynamics Control Module:
• Ensure that the VDCM is functioning properly. If possible, test the module with a known good unit or perform a diagnostic check if the manufacturer provides specific procedures.
• Verify Power Supply:
• Check the power supply to the VDCM. Use a multimeter to ensure that the module is receiving the correct voltage as specified by the manufacturer.
• Inspect CAN Bus Communication:
• Since U2996 is a communication-related code, check the Controller Area Network (CAN) bus for issues. Look for shorts, opens, or other faults in the wiring.
• Use a scan tool to monitor the CAN bus data and ensure that the VDCM is communicating with other modules correctly.
• Check for Software Updates:
• Sometimes, software glitches can cause communication issues. Check with the vehicle manufacturer for any available software updates for the VDCM or the vehicle’s ECU.
• Clear Codes and Test Drive:
• After performing the above checks and repairs, clear the trouble codes using the OBD-II scanner. Take the vehicle for a test drive to see if the code reappears.
• Consult Technical Service Bulletins (TSBs):
• Look for any TSBs related to the specific make and model of the vehicle. Manufacturers may have issued bulletins regarding known issues with the VDCM or related systems.
• Professional Diagnosis:
• If the issue persists after performing the above steps, consider seeking help from a professional mechanic or dealership. They may have access to specialized diagnostic tools and knowledge of specific vehicle issues. By following these steps, you can systematically identify and resolve the underlying issue causing the U2996 code.