AutoCodes – Buick – C1117 Buick

C1117 Buick Code - Manual Trailer Brake Apply Request Signal 2 Malfunction

Quick Answer

The trailer brake control system has a control panel with the trailer gain and manual apply switches. Common causes include Faulty Trailer Brake Control Switch, Trailer Brake Control Switch harness is open or shorted, Trailer Brake Control Switch circuit poor electrical connection. 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
C1117 Buick indicates Manual Trailer Brake Apply Request Signal 2 Malfunction.
Common causes
Common causes include Faulty Trailer Brake Control Switch, Trailer Brake Control Switch harness is open or shorted, Trailer Brake Control Switch circuit poor electrical connection.
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.
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Code Popularity 866
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 18, 2023
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Code C1117 Buick Description

The trailer brake control system has a control panel with the trailer gain and manual apply switches. The switches are located on the instrument panel to the left of the steering column. The control panel and switches allow you to adjust the amount of output, referred to as trailer gain, available to the electric trailer brakes and allow you to manually apply the trailer brakes. The trailer brake control panel and switches are used along with the trailer brake display page on the driver information center to adjust and display power output to the trailer brakes.
OBDII Code C1117 Buick - Manual Trailer Brake Apply Request Signal 2 Malfunction - AutoCodes.com
C1117 Buick Code - Manual Trailer Brake Apply Request Signal 2 Malfunction

What are the Possible Causes of the DTC C1117 Buick?

  • Faulty Trailer Brake Control Switch
  • Trailer Brake Control Switch harness is open or shorted
  • Trailer Brake Control Switch circuit poor electrical connection
  • Faulty Chassis Control Module-Auxiliary

How to Fix the DTC C1117 Buick?

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 C1117 Buick 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 C1117 Buick code?

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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 C1117 Buick Code

What are the common symptoms of OBDII code C1117 in a Buick related to Manual Trailer Brake Apply Request Signal 2 Malfunction?

- Common symptoms include issues with trailer brake functionality, abnormal brake system behavior, and the illumination of the brake warning light on the dashboard.

What are the possible causes of OBDII code C1117 in a Buick related to Manual Trailer Brake Apply Request Signal 2 Malfunction?

- Possible causes may include faulty wiring or connections related to the trailer brake system, a malfunctioning trailer brake controller, or issues with the brake switch.

How can I diagnose the Manual Trailer Brake Apply Request Signal 2 Malfunction in a Buick triggering OBDII code C1117?

- Diagnosis typically involves inspecting the trailer brake system components, checking for any visible damage or loose connections, testing the trailer brake controller, and using a diagnostic scanner to read the specific fault codes.

What are some repair tips for addressing OBDII code C1117 in a Buick related to Manual Trailer Brake Apply Request Signal 2 Malfunction?

- Repair tips may include repairing or replacing damaged wiring or connectors, ensuring proper installation and function of the trailer brake controller, and verifying the correct operation of the brake switch.

Can OBDII code C1117 in a Buick related to Manual Trailer Brake Apply Request Signal 2 Malfunction be safely ignored?

- Ignoring this code may result in potential safety hazards or issues with the trailer brake system, so it is recommended to address the underlying problem promptly.

Is it safe to continue driving my Buick with OBDII code C1117 related to Manual Trailer Brake Apply Request Signal 2 Malfunction?

- It is advisable to avoid towing trailers or heavy loads until the issue is resolved to prevent any potential brake system failures or safety risks while driving.

Do I need a professional mechanic to fix OBDII code C1117 in a Buick related to Manual Trailer Brake Apply Request Signal 2 Malfunction?

- While some DIY enthusiasts may be able to troubleshoot and repair the issue, seeking help from a qualified mechanic or technician is recommended for accurate diagnosis and proper resolution of the problem.

What are the possible implications of ignoring OBDII code C1117 in a Buick related to Manual Trailer Brake Apply Request Signal 2 Malfunction?

- Ignoring this code may lead to compromised brake performance, potential safety risks while towing, and the possibility of causing further damage to the trailer brake system components.

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