B1395 – Power Door Memory Lock Relay Circuit Short To Ground

The ODBII code B1395 indicates a malfunction in the power door memory lock relay circuit, specifically a short to ground condition, which means there is an unintended connection to the ground in the circuit that controls the power door locks.

The severity of ODBII code B1395 is moderate.

Common Causes For: B1394 Power Door Memory Lock Relay Circuit Short To Battery

• Shorted wiring or connectors
• Faulty power door memory lock relay
• Damaged or corroded ground connections
• Malfunctioning door lock control module
• Faulty switches or actuators in the door lock system

Common misdiagnosis for B1395 Power Door Memory Lock Relay Circuit Short To Ground

• Faulty door lock actuator
• Defective body control module (BCM)
• Wiring issues or shorts in the harness
• Malfunctioning power door lock switch
• Incorrectly diagnosed battery or charging system problems
• Issues with the vehicle’s security system
• Faulty relay or fuse related to the door lock system

Common Troubleshooting Steps

When dealing with OBD-II code B1395, which indicates a “Power Door Memory Lock Relay Circuit Short To Ground,” there are several common troubleshooting steps you can follow to diagnose and potentially resolve the issue. Here’s a structured approach:

• Understand the Code: B1395 typically relates to the power door lock system, specifically indicating that the relay circuit is shorted to ground. This can affect the operation of the door locks and memory functions.
• Visual Inspection: **Wiring and Connectors: Inspect the wiring harness and connectors associated with the power door lock system. Look for frayed wires, corrosion, or loose connections that could cause a short to ground.
• **Relay Condition: Check the condition of the door lock relay. If it’s damaged or burnt, it may need to be replaced.
• Check the Relay: **Test the Relay: Remove the relay and test it using a multimeter. Check for continuity and ensure it operates correctly when energized.
• **Replace if Necessary: If the relay is faulty, replace it with a new one.
• Inspect the Door Lock Actuators: **Actuator Functionality: Check the door lock actuators for proper operation. A malfunctioning actuator can cause a short circuit.
• **Resistance Check: Measure the resistance of the actuators. If the resistance is too low, it may indicate a short.
• Check for Shorts: **Continuity Test: Use a multimeter to check for continuity between the relay circuit and ground. If you find continuity where there shouldn’t be any, you likely have a short.
• **Inspect Ground Points: Ensure that all ground points related to the door lock system are clean and secure.
• Scan for Additional Codes: **Check for Other Codes: Use an OBD-II scanner to check for any additional trouble codes that may provide more context or indicate related issues.
• Inspect the Body Control Module (BCM): **BCM Functionality: The BCM controls the power door locks. If it’s malfunctioning, it could cause issues with the relay circuit.
• **Software Updates: Check if there are any software updates available for the BCM that might address known issues.
• Test the Circuit: **Voltage and Ground Tests: With the ignition on, use a multimeter to check for proper voltage at the relay and ensure that the ground circuit is functioning correctly.
• **Wiring Diagrams: Refer to wiring diagrams specific to your vehicle to trace the circuit and identify any potential issues.
• Repair or Replace Components: Based on your findings, repair any damaged wiring, replace faulty components (like the relay or actuators), and ensure all connections are secure.
• Clear Codes and Test Drive: After making repairs, clear the trouble codes using an OBD-II scanner and take the vehicle for a test drive to see if the code returns.1
• Consult a Professional: If you are unable to resolve the issue after these steps, it may be best to consult a professional mechanic or technician who has experience with your specific vehicle make and model. By following these steps, you should be able to diagnose and potentially fix the issue related to the B1395 code. Always refer to your vehicle’s service manual for specific details and procedures.