B1396 – Power Door Lock Circuit Short To Battery

The ODBII code B1396 indicates a short circuit in the power door lock circuit, meaning there is an unintended connection to the battery, which can cause the door locks to malfunction.

The severity of ODBII code B1396 is moderate.

Common Causes For: B1395 Power Door Memory Lock Relay Circuit Short To Ground

• Shorted wiring or connectors
• Faulty door lock actuator
• Malfunctioning power door lock switch
• Damaged or corroded ground connections
• Faulty body control module (BCM)
• Incorrectly installed aftermarket accessories
• Water intrusion or moisture damage in electrical components

Common misdiagnosis for B1396 Power Door Lock Circuit Short To Battery

• Faulty door lock actuator
• Wiring harness issues
• Malfunctioning body control module (BCM)
• Defective power door lock switch
• Shorted or damaged wiring
• Battery issues or poor connections
• Faulty relay or fuse related to door locks

Common Troubleshooting Steps

When dealing with OBD-II code B1396, which indicates a “Power Door Lock Circuit Short To Battery,” there are several common troubleshooting steps you can follow to diagnose and potentially resolve the issue. Here’s a structured approach:

• Verify the Code: Use an OBD-II scanner to confirm the presence of the B1396 code. Check for any additional codes that may provide more context.
• Inspect the Wiring and Connectors: **Visual Inspection: Check the wiring harnesses and connectors related to the power door lock system for any signs of damage, fraying, or corrosion.
• **Ground Connections: Ensure that all ground connections are secure and free of corrosion.
• Check the Power Door Lock Switch: Test the door lock switch for proper operation. A faulty switch can cause a short circuit.
• Use a multimeter to check for continuity and proper voltage at the switch.
• Examine the Door Lock Actuator: Inspect the door lock actuator for any signs of damage or malfunction. A shorted actuator can cause the circuit to read as shorted to battery.
• Disconnect the actuator and check for continuity between the actuator terminals.
• Test the Circuit: Use a multimeter to check the voltage and ground at the door lock circuit. Ensure that the voltage is within the expected range.
• Check for continuity in the wiring between the switch, actuator, and the body control module (BCM).
• Check the Body Control Module (BCM): If all other components check out, the BCM may be at fault. Inspect for any signs of damage or corrosion.
• If possible, test the BCM with a scan tool to see if it is functioning correctly.
• Look for Shorts: Inspect the wiring for any shorts to ground or battery. This can be done by performing a resistance test on the wires.
• If a short is found, repair or replace the damaged wiring.
• Clear the Codes and Test Drive: After performing repairs, clear the codes using the OBD-II scanner and take the vehicle for a test drive to see if the code returns.
• Consult a Professional: If the issue persists after following these steps, it may be necessary to consult a professional mechanic or technician for further diagnosis.Additional Tips: – Always disconnect the battery before working on electrical components to avoid any accidental shorts or shocks. – Refer to the vehicle’s service manual for specific wiring diagrams and component locations. By following these troubleshooting steps, you should be able to identify and resolve the issue related to the B1396 code.