AutoCodes – Generic – B117B

B117B Code - Latch Motor Circuit Open

Quick Answer

The Liftgate/Trunk Module (LTM) monitors the Latch Motor. Common causes include Faulty Latch Motor, Latch Motor harness is open or shorted, Latch Motor circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means: B117B indicates Latch Motor Circuit Open.
Common causes: Common causes include Faulty Latch Motor, Latch Motor harness is open or shorted, Latch Motor circuit poor electrical connection.
Severity: Low - monitor the vehicle and repair when practical.
Can I drive?: The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

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Code Popularity 1,096

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 19, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B117B Description

The Liftgate/Trunk Module (LTM) monitors the Latch Motor. The LTM sets the OBDII code when a continuous memory and on-demand Diagnostic Trouble Code (DTC) that sets when the LTM detects an open on the latch motor circuit(s). The LTM determines the circuit(s) is open when it detects no current change upon latch motor activation.

OBDII Code B117B - Latch Motor Circuit Open - AutoCodes.com — B117B Code - Latch Motor Circuit Open

What does this mean?

What are the Possible Causes of the DTC B117B?

Faulty Latch Motor
Latch Motor harness is open or shorted
Latch Motor circuit poor electrical connection
Faulty Liftgate/Trunk Module (LTM)

How to Fix the DTC B117B?

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 B117B 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 B117B code?

Need more information on how to fix the B117B code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B117B code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B117B Ford — Latch Motor Circuit Open
B117B Lincoln — Latch Motor Circuit Open
B117B Mercury — Latch Motor Circuit Open

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.