Engine-Codes - Generic - C2808

C2808 Code - Trailer Brake Output Circuit Short To Overload

- Code Popularity: 1,119 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents

|What are the Possible Causes of the Code C2808?

  • Faulty Trailer Brake Control (TBC) Module
  • Trailer Brake Control (TBC) Module harness is open or shorted
  • Trailer Brake Control (TBC) Module circuit poor electrical connection

|How to Fix the C2808 Code?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

|What is the Cost to Diagnose the Code C2808?

Labor: 1.0

The cost to diagnose the C2808 code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

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|What are Code C2808 Possible Symptoms?

  • Anti-Lock Brake System (ABS) Warning Light ON
  • Engine Light ON (or Service Engine Soon Warning Light)

|What Does the C2808 Code Mean?

The braking energy that is provided to the trailer is varied with a Pulse Width Modulated (PWM) signal along the circuit that switches between 0 volt and battery voltage, the higher the duty cycle the more braking power available. The Trailer Brake Control (TBC) Module varies the PWM signal based on various inputs such as the brake pressure transducer, TBC module manual slider switch and the TBC module gain buttons. With the vehicle stationary and with the manual slider switch fully to the left with a gain of 10, there should be greater than 10-12 volts supplied to pin 3 of the 7-pin trailer tow connector. Every 4 seconds the TBC module sends a voltage pulse along circuit CAT19 (BU) to pin 3 of the 7-pin trailer tow connector to determine whether or not a trailer is connected.

C2808 Code - Trailer Brake Output Circuit Short To Overload

|Need more Information on the C2808 Code?

Need more information on how to fix the C2808 code? Get Access to Factory Service Manuals

|Code C2808 Information for Specific Makes

  • C2808 Ford Trailer Brake Output Circuit Short To Overload
  • C2808 Lincoln Trailer Brake Output Circuit Short To Overload
  • C2808 Mercury Trailer Brake Output Circuit Short To Overload

|Need Help with the C2808 Code?

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