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Engine-Codes – Generic – B117A

B117A Code - Latch Motor Circuit Short To Ground

Quick Answer

The B117A diagnostic trouble code (DTC) indicates that there is a short to ground in the latch motor circuit of the vehicle. Common causes include Wiring damage or corrosion in the latch motor circuit, Faulty latch motor or actuator, Short circuit in the wiring harness. 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
B117A indicates Latch Motor Circuit Short To Ground.
Common causes
Common causes include Wiring damage or corrosion in the latch motor circuit, Faulty latch motor or actuator, Short circuit in the wiring harness.
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 13, 2024
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Code B117A Description

The B117A diagnostic trouble code (DTC) indicates that there is a short to ground in the latch motor circuit of the vehicle. This code typically affects the power door lock system, specifically the motor that controls the locking mechanism. When this circuit is shorted to ground, it can prevent the door lock from functioning properly, leading to issues with locking and unlocking the doors.

OBDII Code B117A - Latch Motor Circuit Short To Ground
B117A Code - Latch Motor Circuit Short To Ground

Common Causes of B117A

  1. Wiring damage or corrosion in the latch motor circuit.
  2. Faulty latch motor or actuator.
  3. Short circuit in the wiring harness.
  4. Water intrusion causing electrical issues in the door lock system.

Symptoms of B117A

  1. Inability to lock or unlock the doors using the power door lock buttons.
  2. Doors locking or unlocking intermittently or erratically.
  3. Unusual clicking or buzzing noises coming from the door lock mechanism.
  4. Dashboard warning light indicating a door lock system malfunction.

How to Fix B117A

  1. Diagnose the issue by using a multimeter to test for continuity and voltage in the latch motor circuit.
  2. Inspect the wiring harness for any signs of damage, corrosion, or loose connections.
  3. Replace the faulty latch motor or actuator if necessary.
  4. Repair any short circuits in the wiring harness.
  5. Clear the DTC and test the door lock system to ensure proper functionality.

Cost to Fix B117A

The cost of repairing a latch motor circuit short to ground can vary depending on the extent of the damage and the specific components that need to be replaced. On average, the parts for this repair can range from $50 to $200, while labor costs can range from $100 to $300. Keep in mind that these are rough estimates, and actual repair costs may differ based on the location, vehicle make and model, and labor rates at the auto repair shop. It's recommended to obtain quotes from local shops to get a more accurate cost estimate for this repair.

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Code B117A 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 B117A Code

1. What are common symptoms of OBDII code B117A (Latch Motor Circuit Short To Ground)?

- The common symptoms include power door locks not functioning properly, doors not locking/unlocking, and potential issues with the alarm system.

2. What can cause the OBDII code B117A to appear?

- The code B117A may appear due to a short circuit in the latch motor circuit that causes the motor to ground out.

3. How can I diagnose the issue related to the OBDII code B117A?

- Diagnosing the issue typically involves checking the wiring harness around the latch motor for any signs of damage or corrosion and testing the latch motor itself for proper function.

4. Is it safe to continue driving with the OBDII code B117A active?

- While the vehicle may still be operable with this code, it is not recommended to continue driving with malfunctioning door locks as it may pose a security risk.

5. Can I repair the latch motor circuit short to ground issue myself?

- Depending on your skill level and access to tools, you may be able to repair the issue yourself by replacing damaged wiring or the latch motor. However, professional assistance is recommended for accurate diagnosis and repair.

6. Are there any temporary fixes for the latch motor circuit short to ground problem?

- Temporary fixes like manually locking/unlocking doors or disconnecting the latch motor may be possible but may not address the root cause of the issue.

7. Will resetting the OBDII code B117A make the problem go away?

- Resetting the code may temporarily clear the warning light, but if the underlying issue with the latch motor circuit is not addressed, the code is likely to reappear.

8. How much does it cost to repair the latch motor circuit short to ground problem?

- Repair costs can vary depending on the extent of the damage and whether you choose to do the repairs yourself or seek professional help. It's recommended to get a diagnosis and cost estimate from a trusted mechanic.

9. Can a faulty latch motor affect other vehicle systems?

- A faulty latch motor can potentially affect other vehicle systems like the alarm system, central locking system, and in some cases, the electrical system if left unrepaired.

10. Is the latch motor circuit short to ground a common issue in certain vehicle makes and models?

- The latch motor circuit short to ground issue can be more common in certain vehicle makes and models known for electrical system problems, but it can occur in any vehicle with power door locks.

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