OBD Guide
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B1515

Seat Driver Occupied Switch Circuit Failure

B1515 is an OBD-II diagnostic trouble code meaning: Seat Driver Occupied Switch Circuit Failure. Common causes: open or short circuit in wiring harness, faulty seat occupancy sensor. 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
  • Incorrect operation of the passive safety system
  • Error B1515 in diagnostic scanner memory

Causes

  • Open or short circuit in wiring harness
  • Faulty seat occupancy sensor
  • Poor contact in connectors
  • Contact corrosion
  • Mechanical damage to wiring

How to Fix

  1. Check the integrity of the wiring harness
  2. Inspect the sensor connectors for corrosion or damage.
  3. Check sensor resistance
  4. Replace sensor if necessary
  5. Clean connector contacts
  6. Reset the error and check the system

Related codes

B1516B1517B1518

FAQ

What does the B1515 code mean?

B1515 is an OBD-II diagnostic trouble code that indicates: Seat Driver Occupied Switch Circuit Failure

What causes a B1515 error code?

The most common causes of B1515 include: Open or short circuit in wiring harness; Faulty seat occupancy sensor; Poor contact in connectors; Contact corrosion.

How do I fix a B1515 diagnostic trouble code?

To fix B1515: Check the integrity of the wiring harness. Inspect the sensor connectors for corrosion or damage.. Check sensor resistance. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1515?

Do not drive — repair immediately

How much does it cost to fix B1515?

The estimated repair cost for B1515 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat