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AutoCodes - Generic - C1118

C1118 Code - Trailer Brake Control Sensitivity Switch Circuit Malfunction

- Code Popularity: 14,784 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC C1118?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • 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
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How to Fix the DTC C1118?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C1118 code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

Code C1118 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 C1118 - Trailer Brake Control Sensitivity Switch Circuit Malfunction - AutoCodes.com
C1118 Code - Trailer Brake Control Sensitivity Switch Circuit Malfunction

Need More Information on the Code?

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Information for Specific Makes

  • C1118 Buick Trailer Brake Control Sensitivity Switch Circuit Malfunction  📷
  • C1118 Cadillac Trailer Brake Control Sensitivity Switch Circuit Malfunction  📷
  • C1118 Chevrolet Trailer Brake Control Sensitivity Switch Circuit Malfunction  📷
  • C1118 GMC Trailer Brake Control Sensitivity Switch Circuit Malfunction  📷

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Code C1118 comments

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