C2806
Trailer Brake Output Circuit Short To VBattery
C2806 is an OBD-II diagnostic trouble code meaning: Trailer Brake Output Circuit Short To VBattery . Common causes: wiring harness damage, short circuit in control solenoids. Estimated repair cost: $33–167.
Severity
🔴 HighCan you drive?
Do not drive — repair immediately
Approx. repair cost
$33–167 (est.)
Symptoms
- The brake system fault indicator is on
- Trailer braking system failure
- Unstable trailer brake operation
Causes
- Wiring harness damage
- Short circuit in control solenoids
- Oxidation or damage to connector contacts
- Malfunction of the trailer brake control unit
Related codes
FAQ
What does the C2806 code mean?
C2806 is an OBD-II diagnostic trouble code that indicates: Trailer Brake Output Circuit Short To VBattery
What causes a C2806 error code?
The most common causes of C2806 include: Wiring harness damage; Short circuit in control solenoids; Oxidation or damage to connector contacts; Malfunction of the trailer brake control unit.
Is it safe to drive with C2806?
Do not drive — repair immediately
How much does it cost to fix C2806?
The estimated repair cost for C2806 is $33–167. Actual cost depends on your vehicle, location, and labor rates.
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