B1395 — Power Door Memory Lock Relay Circuit Short To Ground #

The code label may vary by manufacturer.

• Ford: Power Door Memory Lock Relay Circuit Short to Ground
• Lincoln: Door Lock Memory Relay Circuit Shorted to Ground
• Mercury: Power Door Memory Lock Relay Circuit Short to Ground

Summary of code B1395 #

The B1395 diagnostic trouble code (DTC) refers to a problem detected in the power door lock memory system, specifically a short-to-ground in the relay control circuit. The relay is a type of electrical switch used to control high-current circuits with a low-current signal. In this case, the relay manages the memory function of the power door lock system, which stores and recalls the preferred lock/unlock positions set by the user. When the system detects a short-to-ground (an unintended connection between a wire and the vehicle’s chassis ground), it triggers the B1395 code. This code is most commonly seen in vehicles equipped with advanced power door memory features, especially those from Ford and its related brands.

Common symptoms for code B1395 #

When a B1395 code is set, you may notice issues with the power door lock system, particularly with the memory function that stores user preferences. The most obvious symptoms tend to involve erratic or non-functional door locking and unlocking, especially when using memory features tied to driver profiles or key fobs. Sometimes, the vehicle may fail to recall saved door positions, or the locks may behave unpredictably.

• Power door locks do not respond to memory recall
• Unintended locking or unlocking of doors
• Door locks operate only manually, not electronically
• Clicking noises from door lock relay area
• Intermittent or complete loss of memory functions for door locks
• No response from driver profile or key fob memory settings

Most likely causes of B1395 #

A short-to-ground in the relay circuit usually results from physical damage or a wiring fault. While the relay itself can fail, the problem often lies in the associated electrical harness, connectors, or a malfunctioning control module. Understanding the most common causes helps focus your diagnostic process and avoid unnecessary part replacement.

1. Damaged or frayed wiring in the door lock memory relay circuit
2. Faulty power door lock memory relay
3. Corroded, loose, or shorted connectors (especially in wet environments)
4. Water intrusion into door or relay area causing a ground fault
5. Defective power door lock control module (sometimes called the door module or Body Control Module)

Step-by-step diagnostics for B1395 #

Pinpointing the cause of a B1395 code requires a methodical approach. Electrical issues can be elusive, but following a logical sequence improves your chances of a quick, cost-effective repair. Always refer to OEM wiring diagrams and safety procedures before starting.

• 1. Confirm the code: Use an OBD-II scanner to verify the presence of B1395. Clear the code and see if it returns.
• 2. Visual inspection: Examine the wiring harness and connectors in the door, especially around the memory lock relay and any areas prone to pinching or abrasion.
• 3. Check for water intrusion: Look for signs of moisture, corrosion, or water damage inside the door and relay area.
• 4. Test the relay: Remove the power door memory lock relay and bench test it with a multimeter or relay tester. Replace if faulty.
• 5. Inspect ground points: Verify that the door lock system grounds are clean, tight, and corrosion-free.
• 6. Check continuity: Using a wiring diagram, test for continuity and shorts to ground along the relay control circuit.
• 7. Test the control module: If all else checks out, diagnose the power door lock control module per OEM procedures, as internal faults can mimic wiring problems.

Possible repairs for B1395 #

The right repair depends on what the diagnosis uncovers. Most fixes involve restoring the integrity of the wiring or replacing a failed relay, but sometimes a deeper issue with the control module may be at play. Here are the most common solutions, each linked directly to a probable cause.

• Repair or replace damaged wiring or connectors in the relay circuit
• Replace the power door memory lock relay if it fails electrical testing
• Clean and secure all ground connections for the door lock system
• Correct any water leaks or sources of moisture near the relay or connectors
• Replace the power door lock control module if confirmed faulty

Is it safe to drive with code B1395? #

Yes, but with limitations. The B1395 code does not affect the core safety or drivability of your vehicle, as it is associated with a convenience system. However, you may lose power door lock memory functions, which can be a security concern or a nuisance if you rely on those features. If you notice erratic locking/unlocking or suspect a wiring short, avoid using the memory function until repaired to prevent further electrical issues.

Vehicles most commonly affected by B1395 #

While the B1395 code can appear in various makes, it is most frequently reported in vehicles with advanced power door memory systems, particularly from Ford and related brands. If your vehicle has programmable door lock positions or driver profiles, it may be more susceptible.

• Ford Explorer (various years)
• Ford Expedition
• Lincoln Navigator
• Mercury Mountaineer
• Ford F-Series with memory seat/lock options

Common mistakes & best practices for B1395 #

Misdiagnosing electrical faults can lead to unnecessary part replacement or repeat visits. Avoid these pitfalls by following structured diagnostics and always consulting the OEM wiring diagrams and service information.

• Replacing the relay without checking the wiring or connectors first
• Overlooking signs of water intrusion or corrosion, especially in door interiors
• Neglecting to clear the code and verify repair effectiveness after each step
• Assuming the control module is faulty before ruling out simpler causes
• Not using a multimeter to check for continuity and shorts

Quick FAQ for code B1395 #

Here are answers to some of the most common questions about B1395:

• Q: Can a blown fuse cause B1395?
  A: Not directly, but a short-to-ground may blow a related fuse. Always check fuses, but the root cause is usually a wiring or relay fault, not the fuse itself.
• Q: Will disconnecting the battery reset B1395?
  A: Disconnecting the battery may clear the code temporarily, but it will return unless the underlying electrical issue is fixed.