OBD Guide
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B17D5

Headlamp Status Output Circuit High

B17D5 is an OBD-II diagnostic trouble code meaning: Headlamp Status Output Circuit High. Common causes: short circuit in wiring harness, body control module (bcm) malfunction. Estimated repair cost: $22–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$22–167 (est.)

Symptoms

  • Incorrect operation of headlights
  • Flashing headlights
  • Error in the lighting system on the dashboard
  • Automatic headlight switch-off

Causes

  • Short circuit in wiring harness
  • Body Control Module (BCM) Malfunction
  • Problems with headlight relays
  • Oxidation of contacts
  • Headlight switch malfunction

How to Fix

  1. Check the condition of the wiring harness to the headlights
  2. Test the circuit for a short circuit
  3. Check the operation of the headlight relay
  4. Clean the connector contacts
  5. Test the BCM module
  6. Replace faulty components

Related codes

B17D4B17D6B2600

FAQ

What does the B17D5 code mean?

B17D5 is an OBD-II diagnostic trouble code that indicates: Headlamp Status Output Circuit High

What causes a B17D5 error code?

The most common causes of B17D5 include: Short circuit in wiring harness; Body Control Module (BCM) Malfunction; Problems with headlight relays; Oxidation of contacts.

How do I fix a B17D5 diagnostic trouble code?

To fix B17D5: Check the condition of the wiring harness to the headlights. Test the circuit for a short circuit. Check the operation of the headlight relay. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B17D5?

Limited driving only, diagnose soon

How much does it cost to fix B17D5?

The estimated repair cost for B17D5 is $22–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat