OBD Guide
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B17F6

Trailer Tail Lamp Control Circuit Short To Battery

B17F6 is an OBD-II diagnostic trouble code meaning: Trailer Tail Lamp Control Circuit Short To Battery. Common causes: wiring harness damage, relay fault. Estimated repair cost: $56–167.

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

Symptoms

  • Trailer tail lights not working
  • Blown fuses
  • Incorrect operation of other electronic systems

Causes

  • Wiring harness damage
  • Relay fault
  • Problems with the control module
  • Short circuit in wiring

How to Fix

  1. Check the condition of the wiring harness
  2. Check relays and fuses
  3. Diagnose the control module
  4. Eliminate short circuit

Related codes

B17F5B17F7

FAQ

What does the B17F6 code mean?

B17F6 is an OBD-II diagnostic trouble code that indicates: Trailer Tail Lamp Control Circuit Short To Battery

What causes a B17F6 error code?

The most common causes of B17F6 include: Wiring harness damage; Relay fault; Problems with the control module; Short circuit in wiring.

How do I fix a B17F6 diagnostic trouble code?

To fix B17F6: Check the condition of the wiring harness. Check relays and fuses. Diagnose the control module. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B17F6?

Limited driving only, diagnose soon

How much does it cost to fix B17F6?

The estimated repair cost for B17F6 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat