Engine-CodesCadillac – C1117 Cadillac

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

Quick Answer

The C1117 code for Cadillac vehicles refers to a Manual Trailer Brake Apply Request Signal 2 Malfunction. Common causes include Faulty trailer brake controller, Damaged wiring or connectors in the trailer brake system, Malfunctioning brake actuator in the trailer. 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 Cadillac indicates Manual Trailer Brake Apply Request Signal 2 Malfunction.
Common causes
Common causes include Faulty trailer brake controller, Damaged wiring or connectors in the trailer brake system, Malfunctioning brake actuator in the trailer.
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.
Table of contents Created and updated by William Orellana on Aug 30, 2024
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Code C1117 Cadillac Description

The C1117 code for Cadillac vehicles refers to a Manual Trailer Brake Apply Request Signal 2 Malfunction. This code indicates a problem with the signal sent to the vehicle's braking system when applying the manual trailer brake. The trailer brake system is designed to work in tandem with the vehicle's braking system to provide safe and efficient braking while towing a trailer. A malfunction in this signal can lead to issues with braking control, potentially compromising the safety of the vehicle and its occupants.

OBDII Code C1117 Cadillac - Manual Trailer Brake Apply Request Signal 2 Malfunction
C1117 Cadillac Code - Manual Trailer Brake Apply Request Signal 2 Malfunction

Common Causes of C1117 Cadillac

  1. Faulty trailer brake controller
  2. Damaged wiring or connectors in the trailer brake system
  3. Malfunctioning brake actuator in the trailer
  4. Issues with the vehicle's brake control module

Symptoms of C1117 Cadillac

  1. Trailer brakes not engaging properly
  2. Irregular braking response when towing a trailer
  3. ABS warning light illuminated on the dashboard
  4. Decreased braking performance while towing

How to Fix C1117 Cadillac

  1. Diagnose the specific cause of the malfunction using a diagnostic scanner
  2. Inspect the trailer brake controller and wiring for any damage or loose connections
  3. Test the brake actuator in the trailer for proper functionality
  4. Check the vehicle's brake control module for any faults or errors
  5. Replace or repair any faulty components identified during the diagnostic process

Cost to Fix C1117 Cadillac

The cost of repairing a Manual Trailer Brake Apply Request Signal 2 Malfunction can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, the cost of parts and labor for this type of repair can range from $200 to $500. It is important to note that labor rates and repair costs may vary based on the location, vehicle make and model, and the specific repair shop. It is recommended to obtain multiple quotes from different repair shops to ensure a competitive price for the repair.

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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 Cadillac Code

1. What does the OBDII code C1117 mean on a Cadillac?

C1117 indicates a malfunction in the Manual Trailer Brake Apply Request Signal 2, which is part of the trailer brake control system.

2. What are the common symptoms of code C1117 on a Cadillac?

Symptoms may include the trailer brake system not functioning properly, a warning light on the dashboard, or difficulty manually applying trailer brakes.

3. What causes the C1117 code to appear?

The code can be caused by a faulty trailer brake switch, damaged wiring or connectors, a malfunctioning trailer brake control module, or issues with the manual brake apply signal circuit.

4. Can I still drive my Cadillac if the C1117 code is present?

Yes, you can drive the vehicle, but towing a trailer may be unsafe as the trailer brakes may not work properly.

5. How do I diagnose the C1117 code on a Cadillac?

Diagnosis involves checking the trailer brake switch, inspecting the wiring and connectors for damage, and testing the trailer brake control module for proper operation.

6. How can I fix the C1117 code on my Cadillac?

Repairs may include replacing a faulty trailer brake switch, repairing or replacing damaged wiring, cleaning or reconnecting connectors, or replacing the trailer brake control module if necessary.

7. How much does it cost to repair a C1117 code on a Cadillac?

Costs vary depending on the issue, but replacing a trailer brake switch can cost $50–$150, while repairing wiring or replacing the control module may cost $200–$600.

8. Can a faulty trailer brake control module trigger the C1117 code?

Yes, a malfunctioning trailer brake control module can send incorrect signals and trigger the C1117 code.

9. Will clearing the code fix the C1117 issue?

Clearing the code will not fix the underlying problem; the cause of the malfunction must be identified and repaired.

10. Can bad trailer wiring cause the C1117 code?

Yes, damaged or corroded trailer wiring can disrupt the manual brake apply signal and cause the C1117 code.

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