U2497 – Lost Communication with Battery Energy Control Module (BECM) – Battery Energy Control Module (BECM) Performance.

The ODBII code U2497 indicates a loss of communication with the Battery Energy Control Module (BECM), suggesting that the BECM is not performing as expected or is unable to communicate with other vehicle systems.

The severity of ODBII code U2497 is typically considered moderate to severe.

Common Causes For: U2496 Lost Communication with Battery Energy Control Module (BECM)”.

• Faulty Battery Energy Control Module (BECM)
• Wiring issues or damaged connectors
• Corroded terminals
• Low battery voltage
• Faulty communication lines
• Software or firmware issues
• Poor ground connections
• Intermittent electrical connections

Common misdiagnosis for U2497 Lost Communication with Battery Energy Control Module (BECM) – Battery Energy Control Module (BECM) Performance.

• Faulty battery
• Bad battery connections or terminals
• Defective alternator
• Wiring issues or shorts in the harness
• Faulty power distribution module
• Malfunctioning engine control module (ECM)
• Incorrectly diagnosed battery management system issues
• Software or firmware issues in the BECM or ECM

Common Troubleshooting Steps

When dealing with OBD-II code U2497, which indicates a “Lost Communication with Battery Energy Control Module (BECM) – BECM Performance,” there are several common troubleshooting steps you can follow to diagnose and potentially resolve the issue. Here’s a structured approach:

• Check for Additional Codes: Use an OBD-II scanner to check for any other related trouble codes. This can provide more context and help identify if there are other issues affecting the BECM.
• Inspect Wiring and Connectors: **Visual Inspection: Check the wiring harness and connectors related to the BECM for any signs of damage, corrosion, or loose connections.
• **Connector Pins: Ensure that the pins in the connectors are not bent, corroded, or damaged.
• Check Battery Voltage: Ensure that the vehicle’s battery is fully charged and in good condition. Low voltage can cause communication issues with the BECM.
• Measure the voltage at the BECM connector to ensure it is receiving the correct voltage.
• Inspect the BECM: If accessible, visually inspect the BECM for any signs of physical damage or overheating.
• Check for any blown fuses related to the BECM or the battery management system.
• Test Communication Lines: Use a multimeter or an oscilloscope to test the communication lines (CAN bus) for continuity and proper signal levels.
• Check for short circuits or open circuits in the communication lines.
• Perform a Network Scan: Use a professional-grade scan tool to perform a network scan to see if other modules are communicating properly. This can help identify if the issue is isolated to the BECM or if it’s part of a larger communication problem.
• Check for Software Updates: Verify if there are any software updates available for the vehicle’s control modules. Sometimes, communication issues can be resolved with a software update.
• Reset the BECM: If applicable, try resetting the BECM by disconnecting the battery for a few minutes or using a scan tool to clear the codes. This can sometimes resolve temporary communication issues.
• Replace the BECM: If all other steps fail and the BECM is determined to be faulty, consider replacing it. Ensure that the replacement module is compatible with your vehicle.
• Consult Technical Service Bulletins (TSBs): Check for any TSBs related to the BECM or communication issues for your specific vehicle make and model. Manufacturers may have specific recommendations or known fixes.1
• Seek Professional Help: If you are unable to resolve the issue after these steps, it may be best to consult a professional mechanic or an automotive technician with experience in electrical systems and OBD-II diagnostics. By following these steps, you should be able to identify the root cause of the U2497 code and take appropriate action to resolve the issue.