OBD Guide
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B1672

Seat Driver Occupied Input Circuit Failure

B1672 is an OBD-II diagnostic trouble code meaning: Seat Driver Occupied Input Circuit Failure. Common causes: open or short circuit in wiring harness, seat occupancy sensor malfunction. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–167 (est.)

Symptoms

  • Airbag light is on
  • The passive safety system may not work in an accident
  • Error B1672 in fault memory

Causes

  • Open or short circuit in wiring harness
  • Seat occupancy sensor malfunction
  • Connector problems or contact corrosion
  • SRS control unit malfunction

How to Fix

  1. Check wiring harness for damage
  2. Inspect the sensor and control unit connectors
  3. Check the resistance of the seat occupancy sensor
  4. Replace sensor or wiring harness if necessary
  5. Reset the error and check the system

Related codes

B1670B1671B1673

FAQ

What does the B1672 code mean?

B1672 is an OBD-II diagnostic trouble code that indicates: Seat Driver Occupied Input Circuit Failure

What causes a B1672 error code?

The most common causes of B1672 include: Open or short circuit in wiring harness; Seat occupancy sensor malfunction; Connector problems or contact corrosion; SRS control unit malfunction.

How do I fix a B1672 diagnostic trouble code?

To fix B1672: Check wiring harness for damage. Inspect the sensor and control unit connectors. Check the resistance of the seat occupancy sensor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1672?

Do not drive — repair immediately

How much does it cost to fix B1672?

The estimated repair cost for B1672 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat