OBD Guide
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B1471

Lamp Headlamp Input Circuit Open

B1471 is an OBD-II diagnostic trouble code meaning: Lamp Headlamp Input Circuit Open. Common causes: break in the wiring harness, faulty headlight relay. Estimated repair cost: $22–111.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$22–111 (est.)

Symptoms

  • Headlights don't work
  • Flashing headlights
  • Dashboard warning

Causes

  • Break in the wiring harness
  • Faulty headlight relay
  • Damaged contacts
  • Lighting control module malfunction
  • Problems with the headlight itself

How to Fix

  1. Check the integrity of the wiring harness
  2. Check headlight relay
  3. Inspect contacts for oxidation
  4. Check the performance of the headlight
  5. Check lighting control module

Related codes

B1472B1473B1474

FAQ

What does the B1471 code mean?

B1471 is an OBD-II diagnostic trouble code that indicates: Lamp Headlamp Input Circuit Open

What causes a B1471 error code?

The most common causes of B1471 include: Break in the wiring harness; Faulty headlight relay; Damaged contacts; Lighting control module malfunction.

How do I fix a B1471 diagnostic trouble code?

To fix B1471: Check the integrity of the wiring harness. Check headlight relay. Inspect contacts for oxidation. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1471?

Limited driving only, diagnose soon

How much does it cost to fix B1471?

The estimated repair cost for B1471 is $22–111. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat