AutoCodes – Buick – B3137 Buick

B3137 Buick Code - All Door Lock Circuit Low

Quick Answer

The outputs to the door lock actuators are controlled by the Body Control Module (BCM). Common causes include Faulty Inoperative Door Lock Actuator, Inoperative Door Lock Actuator harness is open or shorted, Inoperative Door Lock Actuator 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: B3137 Buick indicates All Door Lock Circuit Low.
Common causes: Common causes include Faulty Inoperative Door Lock Actuator, Inoperative Door Lock Actuator harness is open or shorted, Inoperative Door Lock Actuator 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 437

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 04, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B3137 Buick Description

The outputs to the door lock actuators are controlled by the Body Control Module (BCM). When the BCM receives a lock input from a door lock switch, or a keyless entry transmitter, it applies battery positive voltage to the door lock actuator lock control circuit, a ground to the door lock actuator unlock control, and the driver door lock actuator unlock control circuits. When the BCM receives an unlock input from a door lock switch, it applies battery positive voltage to the door lock actuator unlock control, the driver door lock actuator unlock control circuits, and a ground to the door lock actuator lock control circuit. When the BCM receives a single Unlock input from a keyless entry transmitter, it applies battery positive voltage to the driver door lock actuator unlock control circuit and a ground to the door lock actuator lock control circuit to unlock the driver door. A second Unlock input from the transmitter applies battery positive voltage to the door lock actuator unlock control circuit, and a ground to the door lock actuator lock control circuit to unlock the passenger door or doors.

OBDII Code B3137 Buick - All Door Lock Circuit Low - AutoCodes.com — B3137 Buick Code - All Door Lock Circuit Low

What does this mean?

What are the Possible Causes of the DTC B3137 Buick?

Faulty Inoperative Door Lock Actuator
Inoperative Door Lock Actuator harness is open or shorted
Inoperative Door Lock Actuator circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B3137 Buick?

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 B3137 Buick 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.

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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 B3137 Buick Code

1. What does OBDII code B3137 mean on a Buick?

Code B3137 indicates a low voltage in the all door lock circuit, which impacts the locking system's operation.

2. What are the common symptoms of code B3137 in a Buick?

Symptoms include malfunctioning door locks, failure to lock or unlock doors, or intermittent lock operation.

3. What causes code B3137 to appear on a Buick?

Common causes include damaged wiring, faulty door lock actuators, blown fuses, or issues with the body control module (BCM).

4. Can code B3137 affect other vehicle systems?

While primarily related to the door locks, it may indirectly affect convenience features tied to the BCM.

5. How do I diagnose code B3137 in a Buick?

Start by inspecting the wiring and connectors for damage, checking the fuses, and testing the door lock actuators for proper functionality.

6. Can a low battery cause code B3137 on a Buick?

Yes, a weak or failing battery can result in insufficient voltage to the door lock circuit, triggering this code.

7. Is it safe to drive a Buick with code B3137?

Yes, but the door locks may not work properly, which could pose a security risk when parked.

8. How do I fix code B3137 on a Buick?

Repairs may involve replacing damaged wiring, faulty actuators, or addressing issues with the BCM after proper diagnosis.

9. Can I clear code B3137 without repairing the issue?

Clearing the code without addressing the underlying problem may cause it to reappear, as the fault still exists.

10. How much does it cost to repair code B3137 on a Buick?

Repair costs vary depending on the specific issue but can range from $50 for simple fixes like fuse replacement to $300 or more for actuator or BCM repairs.