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Engine-Codes – Generic – B117B

B117B Code - Latch Motor Circuit Open

Quick Answer

The B117B code indicates a problem with the latch motor circuit being open. Common causes include Faulty latch motor, Damaged wiring or connectors in the circuit, Blown fuse related to the latch motor circuit. 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
B117B indicates Latch Motor Circuit Open.
Common causes
Common causes include Faulty latch motor, Damaged wiring or connectors in the circuit, Blown fuse related to the latch motor circuit.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 09, 2024
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Code B117B Description

The B117B code indicates a problem with the latch motor circuit being open. This means that there is an issue with the electrical circuitry that controls the latch motor, which is responsible for opening and closing various components such as doors, trunks, hoods, or fuel caps. When this circuit is open, it can prevent the latch from functioning properly, leading to potential safety hazards and inconvenience for the driver.

OBDII Code B117B - Latch Motor Circuit Open
B117B Code - Latch Motor Circuit Open

Common Causes of B117B

  1. Faulty latch motor.
  2. Damaged wiring or connectors in the circuit.
  3. Blown fuse related to the latch motor circuit.
  4. Malfunctioning control module responsible for the latch motor operation.
  5. Corrosion or rust affecting the electrical connections in the circuit.

Symptoms of B117B

  1. Difficulty opening or closing doors, trunks, hoods, or fuel caps.
  2. Warning light on the dashboard indicating a latch motor circuit issue.
  3. Unusual noises coming from the affected components when attempting to open or close them.
  4. Inability to lock or unlock doors remotely or with the key fob.
  5. Visible damage to the latch mechanism or wiring associated with the affected components.

How to Fix B117B

  1. Begin by diagnosing the specific cause of the open latch motor circuit using a diagnostic scanner to retrieve the fault codes.
  2. Inspect the wiring and connectors associated with the latch motor circuit for any damage, corrosion, or loose connections.
  3. Test the latch motor and control module for proper functionality and replace any faulty components as needed.
  4. Reset the fault codes using the diagnostic scanner and test the affected components to ensure they are opening and closing correctly.
  5. Clear any remaining fault codes and perform a final test drive to confirm that the issue has been resolved.

Cost to Fix B117B

The typical repair costs for addressing a latch motor circuit open issue can vary depending on the specific cause of the problem and the labor rates at the auto repair shop. Generally, the cost can range from $100 to $300 for parts and labor. It's important to note that the diagnosis time and labor rates can vary based on factors such as location, vehicle make and model, and engine type. Therefore, it's advisable to check with local auto repair shops for a more accurate estimate.

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Code B117B Information for Specific Makes

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 B117B Code

1. What are the common symptoms of OBDII code B117B (Latch Motor Circuit Open)?

The common symptoms of OBDII code B117B include power door lock issues, inability to lock or unlock doors remotely, and warning lights on the dashboard related to the locking system.

2. What causes the OBDII code B117B (Latch Motor Circuit Open) to trigger?

The code B117B is triggered when the control module detects an open circuit in the latch motor circuit, usually due to a faulty latch motor, damaged wiring, or a broken connection.

3. How can I diagnose the cause of OBDII code B117B (Latch Motor Circuit Open)?

Diagnosing the cause of B117B involves inspecting the latch motor, checking the wiring and connections for damage, and using a multimeter to test for continuity in the circuit.

4. Can I continue to drive my vehicle with OBDII code B117B (Latch Motor Circuit Open) present?

It is generally safe to drive your vehicle with the B117B code, but it is recommended to address the issue promptly to avoid potential inconvenience or safety concerns related to the door locking mechanism.

5. How can I repair OBDII code B117B (Latch Motor Circuit Open) myself?

DIY repair for B117B involves replacing the faulty latch motor, repairing damaged wiring or connections, and clearing the code with an OBDII scanner after the repair is completed.

6. Is it necessary to reset the OBDII code B117B (Latch Motor Circuit Open) after making repairs?

Yes, it is important to reset the B117B code using an OBDII scanner after repairing the latch motor circuit to clear the error code and ensure proper functioning of the door locking system.

7. Can weather conditions or external factors trigger OBDII code B117B (Latch Motor Circuit Open)?

Extreme weather conditions or physical damage to the vehicle, such as water exposure or impact to the doors, can potentially cause issues with the latch motor circuit and trigger the B117B code.

8. Are there any preventive measures to avoid OBDII code B117B (Latch Motor Circuit Open)?

Regularly maintaining the door locking system, inspecting wiring for signs of wear or damage, and promptly addressing any issues with door lock operation can help prevent the occurrence of the B117B code.

9. How long does it typically take to repair OBDII code B117B (Latch Motor Circuit Open)?

The time required to repair B117B varies depending on the specific cause of the issue and the expertise of the person performing the repair, but it can generally be completed within a few hours.

10. Will OBDII code B117B (Latch Motor Circuit Open) affect the overall performance of my vehicle?

While the B117B code itself does not directly impact the performance of the vehicle, unresolved issues with the door locking system can lead to inconvenience and potential safety concerns, especially in certain situations.

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