OBD Guide
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B1427

Lamp Seat Belt Circuit Open

B1427 is an OBD-II diagnostic trouble code meaning: Lamp Seat Belt Circuit Open. Common causes: broken wire in the harness, dashboard lamp fault. Estimated repair cost: $22–111.

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

Symptoms

  • The seat belt light on the dashboard does not light up
  • Seat belt light stays on constantly
  • The SRS system may turn off (the corresponding lamp will come on)

Causes

  • Broken wire in the harness
  • Dashboard lamp fault
  • Problems with the SRS module
  • Short circuit in the circuit
  • Oxidation of contacts

How to Fix

  1. Check the integrity of the wiring harness
  2. Check the lamp on the dashboard
  3. Check connections and contacts
  4. Scan the SRS module for additional errors
  5. Replace damaged components if necessary

Related codes

B1428B1431B1432

FAQ

What does the B1427 code mean?

B1427 is an OBD-II diagnostic trouble code that indicates: Lamp Seat Belt Circuit Open

What causes a B1427 error code?

The most common causes of B1427 include: Broken wire in the harness; Dashboard lamp fault; Problems with the SRS module; Short circuit in the circuit.

How do I fix a B1427 diagnostic trouble code?

To fix B1427: Check the integrity of the wiring harness. Check the lamp on the dashboard. Check connections and contacts. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1427?

Limited driving only, diagnose soon

How much does it cost to fix B1427?

The estimated repair cost for B1427 is $22–111. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat