Engine-CodesCadillac – B3137 Cadillac

B3137 Cadillac Code - All Door Lock Circuit Low

Quick Answer

The B3137 diagnostic trouble code for Cadillac vehicles indicates a problem with the all door lock circuit being low. Common causes include Faulty door lock actuator, Damaged wiring or connectors in the door lock circuit, Malfunctioning body control module. 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 Cadillac indicates All Door Lock Circuit Low.
Common causes
Common causes include Faulty door lock actuator, Damaged wiring or connectors in the door lock circuit, Malfunctioning body control module.
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.
Table of contents Created and updated by William Orellana on Sep 16, 2024
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Code B3137 Cadillac Description

The B3137 diagnostic trouble code for Cadillac vehicles indicates a problem with the all door lock circuit being low. This means that there is an issue with the electrical circuit that controls the door locks in the vehicle. The door lock circuit is responsible for locking and unlocking all the doors in the vehicle, ensuring security and convenience for the driver and passengers.

OBDII Code B3137 Cadillac - All Door Lock Circuit Low
B3137 Cadillac Code - All Door Lock Circuit Low

Common Causes of B3137 Cadillac

  1. Faulty door lock actuator
  2. Damaged wiring or connectors in the door lock circuit
  3. Malfunctioning body control module
  4. Corrosion in the electrical connections
  5. Water damage to the door lock system

Symptoms of B3137 Cadillac

  1. Doors not locking or unlocking properly
  2. Intermittent operation of door locks
  3. Inability to lock or unlock doors remotely
  4. Alarm system may not function correctly
  5. Warning light on the dashboard indicating a door lock issue

How to Fix B3137 Cadillac

  1. Begin by diagnosing the specific cause of the issue using a diagnostic scanner to read the fault codes and pinpoint the problem area.
  2. Inspect the door lock actuator and replace it if it is found to be faulty.
  3. Check the wiring and connectors in the door lock circuit for any damage or corrosion, repairing or replacing them as needed.
  4. Test the body control module to determine if it is functioning correctly, replacing it if necessary.
  5. Clear the fault codes from the vehicle's computer and test the door locking system to ensure proper operation.

Cost to Fix B3137 Cadillac

The cost of repairing the B3137 code for a Cadillac vehicle can vary depending on the specific cause of the issue and the labor rates in your area. On average, you can expect to pay between $150 and $400 for parts and labor to address this problem. Keep in mind that diagnostic time and labor rates at auto repair shops can vary, so it's advisable to get quotes from multiple shops to find the best price for the repair.

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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 Cadillac Code

1. What does the OBDII code B3137 mean on a Cadillac?

The B3137 code indicates a low voltage condition in the all door lock circuit, which may affect the operation of the vehicle's power door lock system.

2. What are common symptoms of the B3137 code on a Cadillac?

Common symptoms include non-functioning power door locks, intermittent locking/unlocking, or the inability to lock or unlock all doors using the key fob or door switch.

3. What causes the B3137 code on a Cadillac?

The code can be caused by faulty wiring, a blown fuse, a malfunctioning door lock actuator, a damaged door lock relay, or issues with the Body Control Module (BCM).

4. Can a weak battery trigger the B3137 code on a Cadillac?

Yes, a weak or failing battery can cause low voltage in the door lock circuit, potentially triggering the B3137 code.

5. How can I diagnose the B3137 code on my Cadillac?

Start by checking the fuses, inspecting the wiring and connectors for damage or corrosion, testing the door lock actuators, and using a scan tool to verify circuit voltage and BCM functionality.

6. Can I still drive my Cadillac with the B3137 code?

Yes, you can drive the vehicle, but the power door lock system may not function properly, which could be inconvenient or compromise security.

7. How do I fix the B3137 code on a Cadillac?

Repairs may include replacing a blown fuse, repairing damaged wiring, replacing a faulty door lock actuator or relay, or reprogramming or replacing the BCM if necessary.

8. How much does it cost to fix the B3137 code on a Cadillac?

The cost varies depending on the root cause. Simple fixes like replacing a fuse may cost under $50, while BCM repairs or replacements could range from $300 to $800.

9. Can the B3137 code clear itself on a Cadillac?

The code may clear temporarily if the issue is intermittent, but a permanent fix requires addressing the underlying problem in the door lock circuit.

10. Do I need a professional to fix the B3137 code on a Cadillac?

While basic checks like inspecting fuses and wiring can be done at home, diagnosing and repairing complex issues like BCM faults or actuator failures may require professional assistance.

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