U1427 – Invalid Data Received from Vehicle Dynamics Control Module.

The ODBII code U1427 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 U1427 is generally considered moderate.

Common Causes For: U1426 Invalid Data Received from Vehicle Dynamics Control Module.

• Faulty Vehicle Dynamics Control Module (VDCM)
• Corrupted or damaged data communication lines
• Poor electrical connections or wiring issues
• Software or firmware issues in the VDCM
• Faulty sensors related to vehicle dynamics
• Issues with the Engine Control Module (ECM) or other related modules
• Low battery voltage or power supply issues
• Interference from aftermarket modifications or devices

Common misdiagnosis for U1427 Invalid Data Received from Vehicle Dynamics Control Module.

• Faulty ABS module
• Incorrect wheel speed sensor readings
• Malfunctioning traction control system
• Defective vehicle stability 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 U1427 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. Look for signs of damage, corrosion, or loose connections. Repair or replace any damaged components.
• 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, yaw rate sensors, and steering angle 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 all ground connections related to 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 the communication between the ECM and VDCM. Look for any communication errors or timeouts.
• Consult Technical Service Bulletins (TSBs):
• Check for any TSBs related to the U1427 code for your specific vehicle make and model. Manufacturers may have specific fixes or recommendations.
• Replace the VDCM:
• If all other troubleshooting steps fail and the VDCM is determined to be faulty, consider replacing it. Ensure that the replacement module is compatible with your vehicle. 1
• Professional Diagnosis:
• If you are unable to resolve the issue, consider seeking help from a professional mechanic or dealership with experience in diagnosing and repairing vehicle communication issues. By following these steps, you should be able to identify and resolve the underlying cause of the U1427 code.