OBD Guide
ENFRDEESPT

B1673

Seat Driver Occupied Input Circuit Open

B1673 is an OBD-II diagnostic trouble code meaning: Seat Driver Occupied Input Circuit Open. Common causes: broken or damaged sensor wiring harness, seat occupancy sensor malfunction. Estimated repair cost: $56–167.

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

Symptoms

  • Airbag light is on
  • The SRS system may not operate in the event of an accident.
  • Error B1673 in fault memory

Causes

  • Broken or damaged sensor wiring harness
  • Seat occupancy sensor malfunction
  • Poor contact in connectors
  • Problems with the SRS module

How to Fix

  1. Check the integrity of the sensor wiring harness
  2. Inspect connectors for oxidation or damage
  3. Check the resistance of the seat occupancy sensor
  4. Replace sensor if necessary
  5. Clear error codes and check if B1673 returns

Related codes

B1670B1671B1672

FAQ

What does the B1673 code mean?

B1673 is an OBD-II diagnostic trouble code that indicates: Seat Driver Occupied Input Circuit Open

What causes a B1673 error code?

The most common causes of B1673 include: Broken or damaged sensor wiring harness; Seat occupancy sensor malfunction; Poor contact in connectors; Problems with the SRS module.

How do I fix a B1673 diagnostic trouble code?

To fix B1673: Check the integrity of the sensor wiring harness. Inspect connectors for oxidation or damage. Check the resistance of the seat occupancy sensor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1673?

Limited driving only, diagnose soon

How much does it cost to fix B1673?

The estimated repair cost for B1673 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

FRDEESPT

See also: Russian version · NationStat