U2514 – BECM Communication Error – Invalid Data Received

The ODBII code U2514 indicates a communication error between the Body Electronic Control Module (BECM) and other modules, specifically due to invalid data being received.

The severity of ODBII code U2514 is generally considered moderate to high.

Common Causes For: U2513 U2513: Control Module Communication Bus Fault

• Faulty Body Control Module (BCM)
• Damaged wiring or connectors
• Corrupted software or firmware in the BCM
• Poor ground connections
• Interference from other electronic components
• Low battery voltage or power supply issues
• Faulty sensors or actuators communicating with the BCM
• Corroded or loose connectors

Common misdiagnosis for U2514 U2514: BECM Communication Error – Invalid Data Received

• Faulty Body Control Module (BCM)
• Wiring issues or damaged connectors
• Faulty sensors related to the body control system
• Software glitches or outdated firmware
• Power supply issues to the BCM
• Grounding problems
• Other communication errors in the CAN bus system
• Incorrectly configured aftermarket accessories or modules

Common Troubleshooting Steps

The OBD-II code U2514 indicates a communication error related to the Body Electronic Control Module (BECM). This error typically means that the BECM is not receiving valid data from other modules or that there is a communication issue within the vehicle’s network. Here are some common troubleshooting steps to address this issue:

• Check for Additional Codes: Use an OBD-II scanner to check for any other related trouble codes. This can provide more context about the issue.
• Inspect Wiring and Connectors: **Visual Inspection: Check the wiring harnesses and connectors related to the BECM for any signs of damage, corrosion, or loose connections.
• **Repair or Replace: If any damaged wires or connectors are found, repair or replace them as necessary.
• Check Power and Ground: **Power Supply: Ensure that the BECM is receiving the correct voltage. Use a multimeter to check the power supply to the module.
• **Ground Connections: Verify that the ground connections are secure and free of corrosion.
• Inspect the BECM: **Module Condition: Check the BECM for any signs of physical damage or water intrusion.
• **Reprogramming: If the module is suspected to be faulty, it may need to be reprogrammed or replaced.
• Network Communication Check: **CAN Bus Integrity: Use a scan tool to monitor the CAN bus for proper communication. Look for any interruptions or faults in the communication lines.
• **Termination Resistors: Ensure that the CAN bus has the correct termination resistors in place.
• Check for Interference: **Aftermarket Accessories: If any aftermarket accessories have been installed, check to see if they are causing interference with the BECM communication.
• **Remove Accessories: Temporarily disconnect any aftermarket devices to see if the issue resolves.
• Perform a Hard Reset: Disconnect the vehicle’s battery for a few minutes to reset the modules. Reconnect and check if the code reappears.
• Consult Technical Service Bulletins (TSBs): Check for any TSBs related to the BECM or the specific vehicle model. Manufacturers may have issued guidance on known issues.
• 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.
• Replace the BECM: If all else fails and the BECM is determined to be faulty, replacement may be necessary. Ensure that the new module is properly programmed to the vehicle. By following these troubleshooting steps, you should be able to identify and resolve the issue related to the U2514 code. Always refer to the vehicle’s service manual for specific procedures and specifications.