AutoCodesBuick – C1113 Buick

C1113 Buick Code - Trailer Brake Power Control Module Enable Circuit Short to Battery

Quick Answer

The chassis control module receives inputs from the trailer brake power control module; these inputs are used to determine trailer connection and the amount of voltage supplied to the trailer brakes. Common causes include Faulty Trailer Brake Power Control Module, Trailer Brake Power Control Module harness is open or shorted, Trailer Brake Power Control Module 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
C1113 Buick indicates Trailer Brake Power Control Module Enable Circuit Short to Battery.
Common causes
Common causes include Faulty Trailer Brake Power Control Module, Trailer Brake Power Control Module harness is open or shorted, Trailer Brake Power Control Module 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 898
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Aug 14, 2020
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Code C1113 Buick Description

The chassis control module receives inputs from the trailer brake power control module; these inputs are used to determine trailer connection and the amount of voltage supplied to the trailer brakes. The trailer brake power control module detects a short to voltage in the trailer brake enable signal circuit.
OBDII Code C1113 Buick - Trailer Brake Power Control Module Enable Circuit Short to Battery - AutoCodes.com
C1113 Buick Code - Trailer Brake Power Control Module Enable Circuit Short to Battery

What are the Possible Causes of the DTC C1113 Buick?

  • Faulty Trailer Brake Power Control Module
  • Trailer Brake Power Control Module harness is open or shorted
  • Trailer Brake Power Control Module circuit poor electrical connection

How to Fix the DTC C1113 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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C1113 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.

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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 C1113 Buick Code

1. What does the OBDII code C1113 mean for a Buick?

C1113 indicates a fault in the Trailer Brake Power Control Module Enable Circuit, specifically a short to the battery.

2. What are the symptoms of the C1113 code on a Buick?

Symptoms may include a trailer brake system warning message, inoperative trailer brakes, or the illumination of the check engine or service trailer brake system light.

3. What causes the C1113 code on a Buick?

Common causes include damaged wiring, a shorted circuit, a faulty trailer brake power control module, or corrosion in the electrical connectors.

4. Can I still drive my Buick with the C1113 code?

Yes, you can drive the vehicle, but the trailer braking system may not function properly, which could be unsafe when towing.

5. How is the C1113 code diagnosed on a Buick?

A technician will use a scan tool to verify the code, inspect the trailer brake wiring and connectors for damage or corrosion, and test the power control module for proper operation.

6. How do I fix the C1113 code on my Buick?

Repairs may involve replacing damaged wiring, cleaning or replacing corroded connectors, or replacing the trailer brake power control module if it’s faulty.

7. What tools are needed to troubleshoot the C1113 code?

You’ll need a diagnostic scan tool, a multimeter to check for voltage and continuity, and possibly wire repair tools if damaged wiring is found.

8. How much does it cost to fix the C1113 code on a Buick?

Repair costs can vary widely, ranging from $100 for simple wiring fixes to $500 or more if the trailer brake power control module needs replacement.

9. Can I fix the C1113 code myself?

If you have basic automotive electrical skills and tools, you may be able to repair damaged wiring or connectors. However, module replacement or advanced diagnostics might require professional help.

10. Will clearing the C1113 code solve the problem?

Clearing the code will remove the warning temporarily, but the underlying issue must be resolved to prevent the code from returning.

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