AutoCodes – Generic – B1393

B1393 Code - Power Door Memory Lock Relay Circuit Open

Quick Answer

The Body Control Module (BCM) monitors the Power Door Memory Lock Relay. Common causes include Faulty Power Door Memory Lock Relay, Power Door Memory Lock Relay harness is open or shorted, Power Door Memory Lock Relay circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: B1393 indicates Power Door Memory Lock Relay Circuit Open.
Common causes: Common causes include Faulty Power Door Memory Lock Relay, Power Door Memory Lock Relay harness is open or shorted, Power Door Memory Lock Relay circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 4,221

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 21, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1393 Description

The Body Control Module (BCM) monitors the Power Door Memory Lock Relay. The BCM sets the OBDII code when the Power Door Memory Lock Relay is not to factory specifications.

OBDII Code B1393 - Power Door Memory Lock Relay Circuit Open - AutoCodes.com — B1393 Code - Power Door Memory Lock Relay Circuit Open

What does this mean?

What are the Possible Causes of the DTC B1393?

Faulty Power Door Memory Lock Relay
Power Door Memory Lock Relay harness is open or shorted
Power Door Memory Lock Relay circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B1393?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1393 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the B1393 code?

Need more information on how to fix the B1393 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1393 code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B1393 Code

1. What are the common symptoms of OBDII code B1393 - Power Door Memory Lock Relay Circuit Open?

- Common symptoms include power door locks not functioning properly, doors not locking or unlocking with the remote, and issues with the power door memory function.

2. What are the possible causes of OBDII code B1393?

- The code B1393 can be caused by a malfunctioning power door lock relay, damaged wiring in the circuit, or a faulty power door lock actuator.

3. How can I diagnose the Power Door Memory Lock Relay Circuit Open issue?

- To diagnose the issue, you can use an OBDII scanner to read the code, visually inspect the wiring and connectors in the circuit, and test the power door lock relay for proper operation.

4. Can a DIY enthusiast repair OBDII code B1393 at home?

- Repairing OBDII code B1393 may be possible for DIY enthusiasts with experience in automotive electrical systems. However, it is recommended to consult a professional mechanic for accurate diagnosis and repair.

5. Are there any quick fixes for OBDII code B1393?

- Quick fixes for code B1393 may include checking and reconnecting any loose wiring connections in the power door lock circuit, ensuring the relay is securely in place, and testing the power door lock system for proper operation.

6. Is it safe to continue driving with OBDII code B1393 active?

- It is generally safe to continue driving with code B1393, but it is important to address the issue promptly to prevent further damage to the power door lock system and ensure the safety and security of the vehicle.

7. How much does it typically cost to repair OBDII code B1393?

- The cost of repairing OBDII code B1393 can vary depending on the underlying cause of the issue, the vehicle make and model, and labor rates. It is advisable to obtain quotes from different mechanics or repair shops.

8. Can weather conditions or external factors trigger OBDII code B1393?

- Extreme weather conditions or exposure to moisture can potentially affect the power door lock circuit and trigger code B1393. It is important to keep the vehicle protected and perform regular maintenance to prevent such issues.

9. Will resetting the OBDII system clear code B1393?

- Resetting the OBDII system may temporarily clear code B1393, but if the underlying issue is not resolved, the code is likely to reappear. It is crucial to diagnose and repair the root cause of the problem.

10. How can I prevent OBDII code B1393 from recurring in the future?

- To prevent code B1393 from recurring, it is essential to maintain the power door lock system, address any wiring or relay issues promptly, and follow the manufacturer's recommended maintenance schedule for the vehicle.