U2228 – Lost Communication with Vehicle Dynamics Control Module.

The ODBII code U2228 indicates a loss of communication with the Vehicle Dynamics Control Module, which may affect the vehicle’s stability and traction control systems.

The severity of ODBII code U2228 is typically considered moderate to severe.

Common Causes For: U2227 Lost Communication with Vehicle Dynamics Control Module.

• Faulty Vehicle Dynamics Control Module (VDCM)
• Damaged or corroded wiring or connectors
• Poor ground connection
• Faulty communication lines (CAN bus issues)
• Software or firmware issues in the VDCM
• Malfunctioning other related control modules
• Battery voltage issues or low battery
• Intermittent electrical connections

Common misdiagnosis for U2228 Lost Communication with Vehicle Dynamics Control Module.

• Faulty ABS module
• Defective wheel speed sensors
• Wiring issues or shorts in the communication lines
• Malfunctioning engine control module (ECM)
• Battery or charging system problems
• Faulty powertrain control module (PCM)
• Incorrectly diagnosed brake system issues
• Software or firmware issues in the vehicle’s control modules

Common Troubleshooting Steps

When dealing with the OBD-II code U2228, which indicates “Lost Communication with Vehicle Dynamics Control Module,” there are several common troubleshooting steps you can follow to diagnose and potentially resolve the issue. Here’s a structured approach:

• 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 the Wiring and Connectors: **Visual Inspection: Check the wiring harness and connectors related to the Vehicle Dynamics Control Module (VDCM) for any signs of damage, corrosion, or loose connections.
• **Connector Pins: Ensure that the pins in the connectors are not bent or corroded.
• Check Power and Ground: **Power Supply: Verify that the VDCM is receiving the correct voltage. Use a multimeter to check the power supply to the module.
• **Ground Connection: Ensure that the ground connection for the VDCM is secure and functioning properly.
• Inspect the Vehicle Dynamics Control Module: **Module Condition: Check the VDCM for any physical damage or signs of failure.
• **Reprogramming: If applicable, consider reprogramming or updating the module’s software, as a software glitch can sometimes cause communication issues.
• Check for Communication Issues: **CAN Bus Communication: Since the VDCM communicates over the CAN bus, check for issues with the CAN network. Look for other modules that may be having communication problems.
• **Scan Tool Communication: Use a scan tool to see if you can communicate with the VDCM. If you cannot, it may indicate a problem with the module or the communication lines.
• Inspect Related Components: **Other Modules: Check other modules that communicate with the VDCM, such as the ABS module or traction control module, for any issues.
• **Fuses: Inspect relevant fuses to ensure they are not blown.
• Perform a Hard Reset: Disconnect the vehicle’s battery for a few minutes to reset the modules. Reconnect and see if the code reappears.
• Consult Technical Service Bulletins (TSBs): Look for any TSBs related to the U2228 code or the VDCM for your specific vehicle make and model. Manufacturers may have known fixes or updates.
• Professional Diagnosis: If the issue persists after performing the above steps, consider seeking help from a professional mechanic or dealership. They may have specialized tools and knowledge to diagnose the problem more effectively.Conclusion Troubleshooting the U2228 code involves a systematic approach to check for communication issues, inspect wiring and connections, and verify the functionality of the Vehicle Dynamics Control Module. Always ensure safety precautions are taken when working on vehicle electronics.