U2496 – Lost Communication with Battery Energy Control Module (BECM).

The ODBII code U2496 indicates a loss of communication between the vehicle’s main control module and the Battery Energy Control Module (BECM), which may affect battery management and performance.

The severity of ODBII code U2496 is generally considered moderate to high.

Common Causes For: U2495 Lost Communication with the Hybrid Powertrain Control Module (HPCM) A.

• Faulty Battery Energy Control Module (BECM)
• Damaged wiring or connectors
• Corroded terminals
• Poor ground connections
• Malfunctioning power supply to the BECM
• Software issues or programming errors
• Faulty communication network (CAN bus issues)
• Low battery voltage or weak battery
• Intermittent electrical connections

Common misdiagnosis for U2496 Lost Communication with Battery Energy Control Module (BECM)”.

• Faulty Battery
• Bad Battery Connections
• Defective Alternator
• Wiring Issues
• Faulty Power Distribution Module
• Malfunctioning Engine Control Module (ECM)
• Corroded Connectors
• Software Issues or Updates Needed
• Faulty Ground Connections
• Other Communication Errors in the CAN Bus System

Common Troubleshooting Steps

When dealing with the OBD-II code U2496, which indicates “Lost Communication with Battery Energy Control Module (BECM),” 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 communication.
• Inspect the 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 pushed back.
• Check the BECM Power Supply: Verify that the BECM is receiving the correct voltage. Use a multimeter to check the power and ground circuits.
• Inspect fuses related to the BECM and replace any that are blown.
• Test the BECM: If possible, perform a functional test of the BECM. This may require specialized diagnostic equipment or software.
• If the BECM is suspected to be faulty, consider replacing it or testing it in another vehicle if available.
• Inspect the Communication Network: Check the CAN (Controller Area Network) bus for proper operation. Look for any shorts, opens, or faults in the communication lines.
• Use a scan tool to monitor the communication between the BECM and other modules. If other modules are also not communicating, the issue may be with the network itself.
• 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.
• Clear Codes and Test Drive: After performing the above checks and repairs, clear the trouble codes using the OBD-II scanner.
• Take the vehicle for a test drive to see if the code reappears. Monitor the vehicle’s performance and any warning lights.
• Consult Technical Service Bulletins (TSBs): Check for any TSBs related to the specific make and model of the vehicle. Manufacturers may have issued guidance on common issues related to the BECM.
• Seek Professional Help: If the issue persists after performing the above steps, it may be necessary to consult a professional mechanic or dealership with experience in diagnosing and repairing communication issues.Conclusion Troubleshooting OBD-II code U2496 involves a systematic approach to check for wiring issues, power supply problems, and the functionality of the BECM itself. By following these steps, you can identify the root cause of the communication loss and take appropriate action to resolve it.