AutoCodes – Mercury – B117B Mercury

B117B Mercury 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 Mercury 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 916

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

What does this mean?

What are the Possible Causes of the DTC B117B Mercury?

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 Mercury?

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 Mercury 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 B117B Mercury Code

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

- Common symptoms include difficulty opening or closing the door, erratic behavior of the door lock mechanism, and sometimes triggering the vehicle's alarm system.

2. What are the possible causes of the OBDII code B117B Mercury (Latch Motor Circuit Open)?

- The code can be triggered by a faulty latch motor, damaged wiring in the latch motor circuit, a blown fuse, or a malfunctioning door control module.

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

- Diagnosing the issue involves checking the wiring and connectors in the latch motor circuit, testing the latch motor itself for proper function, and scanning the vehicle's computer for error codes.

4. Can I still drive my vehicle with the OBDII code B117B Mercury (Latch Motor Circuit Open) present?

- It is not recommended to drive the vehicle with this code present, as it can affect the security and functionality of the door locks, potentially leading to safety concerns.

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

- Repairing the issue may involve replacing the faulty latch motor, repairing damaged wiring, replacing blown fuses, or resetting the door control module.

6. Is it possible to reset the OBDII code B117B Mercury (Latch Motor Circuit Open) without repairs?

- While clearing the error code may temporarily turn off the warning light, it is crucial to address the root cause of the issue to prevent it from reoccurring.

7. How much does it typically cost to repair the OBDII code B117B Mercury (Latch Motor Circuit Open)?

- The cost of repair can vary depending on the cause of the issue, but it may range from $100 for minor repairs to $500 or more for more complex issues like replacing the latch motor.

8. Can weather conditions affect the occurrence of the OBDII code B117B Mercury (Latch Motor Circuit Open)?

- Extreme weather conditions, especially moisture and temperature fluctuations, can sometimes exacerbate issues with the latch motor circuit, leading to the code being triggered.

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

- The repair time can vary depending on the complexity of the issue and the availability of parts, but it typically takes a few hours to a full day to diagnose and repair the problem.

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

- Regularly inspecting the door locks, keeping them well lubricated, and addressing any issues with the door mechanism promptly can help prevent the occurrence of this code.