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Engine-Codes – Chevrolet – C1116 Chevrolet

C1116 Chevrolet Code - Manual Trailer Brake Apply Request Signal 1 Malfunction

Quick Answer

The C1116 Chevrolet code refers to a Manual Trailer Brake Apply Request Signal 1 Malfunction. Common causes include Faulty trailer brake controller module, Wiring issues in the trailer brake system, Malfunctioning trailer brake sensor. 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
C1116 Chevrolet indicates Manual Trailer Brake Apply Request Signal 1 Malfunction.
Common causes
Common causes include Faulty trailer brake controller module, Wiring issues in the trailer brake system, Malfunctioning trailer brake sensor.
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 12, 2024
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Code C1116 Chevrolet Description

The C1116 Chevrolet code refers to a Manual Trailer Brake Apply Request Signal 1 Malfunction. This code indicates that there is a malfunction in the signal requesting manual application of the trailer brakes. In vehicles equipped with a trailer brake controller, this code can affect the ability to manually apply the trailer brakes, which is crucial for controlling the trailer's braking independently of the vehicle.

OBDII Code C1116 Chevrolet - Manual Trailer Brake Apply Request Signal 1 Malfunction
C1116 Chevrolet Code - Manual Trailer Brake Apply Request Signal 1 Malfunction

Common Causes of C1116 Chevrolet

  1. Faulty trailer brake controller module
  2. Wiring issues in the trailer brake system
  3. Malfunctioning trailer brake sensor
  4. Corrosion or damage to electrical connections
  5. Software issues in the trailer brake controller system

Symptoms of C1116 Chevrolet

  1. Inability to manually apply trailer brakes
  2. Poor braking performance while towing a trailer
  3. Erratic behavior of the trailer brake system
  4. Dashboard warning light related to trailer brake system
  5. Difficulty controlling the trailer while braking

How to Fix C1116 Chevrolet

  1. Begin by inspecting the trailer brake controller module for any visible damage or signs of malfunction.
  2. Check the wiring harness and connections for any loose or damaged wires that may be causing the issue.
  3. Test the trailer brake sensor to ensure it is functioning correctly and replace if necessary.
  4. Clear the diagnostic trouble codes from the vehicle's system and test the trailer brake system to verify proper operation.
  5. If the issue persists, consider consulting a professional mechanic or dealership for further diagnosis and repair.

Cost to Fix C1116 Chevrolet

The typical repair costs for addressing a Manual Trailer Brake Apply Request Signal 1 Malfunction can vary depending on the specific cause of the issue. In general, the cost of parts such as a new trailer brake controller module or sensor can range from $100 to $300. Labor costs for diagnosis and repair can add an additional $100 to $200, depending on the shop's hourly rates and the complexity of the repair. It is advisable to consult with local auto repair shops to obtain a more accurate estimate based on the vehicle's make and model.

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Information for Specific Chevrolet Models

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 C1116 Chevrolet Code

1. What does the OBDII code C1116 mean for a Chevrolet?

C1116 indicates a malfunction in the Manual Trailer Brake Apply Request Signal 1 circuit, which is part of the trailer brake control system.

2. What are the common symptoms of code C1116 in a Chevrolet?

Symptoms may include the trailer brakes not responding, a trailer brake warning light on the dashboard, or reduced braking performance when towing.

3. What causes the C1116 code to appear in a Chevrolet?

Common causes include damaged or corroded wiring, a faulty trailer brake control switch, a defective trailer brake control module, or poor electrical connections.

4. Can I still drive my Chevrolet with a C1116 code?

Yes, but towing a trailer may be unsafe since the trailer brakes might not function properly. Address the issue before towing.

5. How do I diagnose the C1116 code in my Chevrolet?

Use an OBDII scanner to confirm the code, check wiring and connectors for damage or corrosion, and test the trailer brake control switch and module for proper operation.

6. Is the C1116 code specific to towing a trailer?

Yes, this code pertains to the trailer brake system and will typically only appear when the system detects an issue with manual trailer brake operation.

7. How can I fix the C1116 code on my Chevrolet?

Inspect and repair any damaged wiring or connectors, replace the trailer brake control switch if faulty, or replace the brake control module if necessary.

8. How much does it cost to repair a C1116 code in a Chevrolet?

Repair costs vary but may range from $50 for simple wiring repairs to $500 or more if the trailer brake control module needs replacement.

9. Can a faulty trailer brake control module cause the C1116 code?

Yes, a malfunctioning trailer brake control module is a potential cause of this code and should be tested during diagnosis.

10. Will clearing the C1116 code fix the problem?

Clearing the code may turn off the warning temporarily, but the issue will likely return unless the underlying problem is resolved.

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