OBD Guide

C2807

Trailer Brake Output Circuit Short To Ground

C2807 is an OBD-II diagnostic trouble code meaning: Trailer Brake Output Circuit Short To Ground. Common causes: wiring harness damage, short circuit to ground. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Check Engine Light Is On
  • Incorrect operation of trailer brakes
  • Trailer brakes do not respond to signals

Causes

  • Wiring harness damage
  • Short circuit to ground
  • Contact corrosion
  • Trailer brake controller malfunction

How to Fix

  1. Check the integrity of the wiring harness
  2. Check contacts for corrosion
  3. Check circuit resistance
  4. Diagnose the trailer brake controller
  5. Replace damaged items

Related codes

FAQ

What does the C2807 code mean?

C2807 is an OBD-II diagnostic trouble code that indicates: Trailer Brake Output Circuit Short To Ground

What causes a C2807 error code?

The most common causes of C2807 include: Wiring harness damage; Short circuit to ground; Contact corrosion; Trailer brake controller malfunction.

How do I fix a C2807 diagnostic trouble code?

To fix C2807: Check the integrity of the wiring harness. Check contacts for corrosion. Check circuit resistance. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C2807?

Limited driving only, diagnose soon

How much does it cost to fix C2807?

The estimated repair cost for C2807 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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