AutoCodes – Generic – B1397

B1397 Code - Power Door Unlock Circuit Short To Battery

Quick Answer

The Body Control Module (BCM) monitors the Power Door Unlock. Common causes include Faulty Power Door Unlock, Power Door Unlock harness is open or shorted, Power Door Unlock 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: B1397 indicates Power Door Unlock Circuit Short To Battery.
Common causes: Common causes include Faulty Power Door Unlock, Power Door Unlock harness is open or shorted, Power Door Unlock 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 6,693

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 B1397 Description

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

OBDII Code B1397 - Power Door Unlock Circuit Short To Battery - AutoCodes.com — B1397 Code - Power Door Unlock Circuit Short To Battery

What does this mean?

What are the Possible Causes of the DTC B1397?

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

How to Fix the DTC B1397?

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 B1397 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 B1397 code?

Need more information on how to fix the B1397 code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 B1397 Code

1. What are the common symptoms of OBDII code B1397 (Power Door Unlock Circuit Short To Battery)?

- The common symptoms include power door locks not working properly, doors unlocking unexpectedly, or a constant draining of the vehicle's battery.

2. What are the possible causes of OBDII code B1397?

- The code B1397 can be triggered by a short circuit in the power door unlock circuit, a faulty door lock actuator, damaged wiring, or a malfunctioning control module.

3. How can I diagnose the Power Door Unlock Circuit Short To Battery issue?

- To diagnose this issue, you can start by checking the wiring and connectors related to the power door unlock circuit, inspecting the door lock actuators, and using a multimeter to test for shorts in the system.

4. Can I still drive my vehicle with the B1397 code present?

- It is generally safe to drive the vehicle with the B1397 code, but you may experience issues with the power door locks and potential battery drain until the problem is resolved.

5. How do I repair OBDII code B1397 (Power Door Unlock Circuit Short To Battery)?

- Repairing this code typically involves locating and repairing the short circuit in the power door unlock circuit, replacing any damaged wiring or connectors, and addressing any issues with the door lock actuators or control module.

6. Is it possible to reset the B1397 code without repairing the underlying issue?

- While you can clear the B1397 code using an OBDII scanner, it is not recommended to do so without addressing the root cause, as the problem will likely reoccur.

7. Are there any preventative measures to avoid OBDII code B1397?

- Regularly inspecting the power door lock system, addressing any issues promptly, and avoiding overloading the electrical system can help prevent the occurrence of code B1397.

8. Can a DIY enthusiast fix the Power Door Unlock Circuit Short To Battery issue?

- Depending on your skill level and access to tools, a DIY enthusiast may be able to diagnose and repair the B1397 code. However, complex electrical issues may require professional assistance.

9. How long does it typically take to repair OBDII code B1397?

- The repair time for the B1397 code can vary based on the underlying cause and the complexity of the repair, but it may take anywhere from a few hours to a full day to complete the repair.

10. Will fixing OBDII code B1397 affect my vehicle's warranty?

- If your vehicle is still under warranty, it is advisable to have the issue addressed by an authorized dealership or service center to ensure that the repair does not void any existing warranty coverage.