U1429 – Invalid Data Received from Vehicle Dynamics Control Module.

The ODBII code U1429 indicates that the vehicle’s control module has received invalid or erroneous data from the Vehicle Dynamics Control Module, which may affect the vehicle’s stability and handling systems.

The severity of ODBII code U1429 is generally considered moderate.

Common Causes For: U1428 Invalid Data Received from Vehicle Dynamics Control Module.

• Faulty Vehicle Dynamics Control Module (VDCM)
• Corrupted or faulty wiring/connectors
• Communication issues between modules
• Software or firmware issues in the VDCM
• Faulty sensors related to vehicle dynamics
• Low battery voltage or electrical issues
• Intermittent faults in the CAN bus system

Common misdiagnosis for U1429 Invalid Data Received from Vehicle Dynamics Control Module.

• Faulty ABS module
• Incorrect wheel speed sensor readings
• Malfunctioning traction control system
• Defective vehicle dynamics control module
• Wiring issues or poor connections
• Faulty powertrain control module (PCM)
• Incorrectly calibrated sensors
• Software or firmware issues in the control modules

Common Troubleshooting Steps

The OBD-II code U1429 indicates that the Engine Control Module (ECM) has received invalid data from the Vehicle Dynamics Control Module (VDCM). This can be related to issues with communication between modules, sensor malfunctions, or wiring problems. Here are some common troubleshooting steps to diagnose and resolve the issue:

• Check for Additional Codes: Use an OBD-II scanner to check for any other trouble codes that may be present. This can provide more context and help identify related issues.
• Inspect Wiring and Connectors:
• Visually inspect the wiring and connectors between the ECM and the VDCM for any signs of damage, corrosion, or loose connections.
• Ensure that all connectors are securely plugged in and that there are no bent pins.
• Check for Software Updates:
• Verify if there are any software updates available for the ECM or VDCM. Sometimes, manufacturers release updates to fix communication issues.
• Test the Vehicle Dynamics Control Module:
• If possible, test the VDCM to ensure it is functioning correctly. This may involve using a scan tool to check for live data and see if the module is responding as expected.
• Inspect Related Sensors:
• Check the sensors that provide data to the VDCM, such as wheel speed sensors, steering angle sensors, and yaw rate sensors. Ensure they are functioning properly and that their wiring is intact.
• Perform a Hard Reset:
• Disconnect the vehicle’s battery for a few minutes to reset the ECM and VDCM. Reconnect the battery and see if the code reappears.
• Check for Ground Issues:
• Ensure that the ground connections for both the ECM and VDCM are secure and free of corrosion. Poor grounding can lead to communication issues.
• Scan for Communication Issues:
• Use a scan tool to check for communication errors between the ECM and VDCM. This can help identify if the issue is related to the communication bus (CAN bus).
• Consult Technical Service Bulletins (TSBs):
• Look for any TSBs related to the U1429 code for your specific vehicle make and model. Manufacturers may have documented common issues and fixes.
• Replace Faulty Components:
• If all other steps do not resolve the issue, consider replacing the VDCM or ECM, as one of these components may be faulty. 1
• Professional Diagnosis:
• If you are unable to resolve the issue, it may be best to take the vehicle to a qualified technician or dealership for further diagnosis. By following these steps, you should be able to identify and resolve the underlying issue causing the U1429 code.