B00B3: Driver Seat Occupant Classification Sensor "D" (Subfault)

What it means

The restraint control module monitors driver seat occupant classification sensor D as part of the seat classification system. It sets this code when it detects a fault in that sensor or its circuit; the title does not specify the failure mode.

At a glance

• Usually lights the airbag (SRS) or body-system warning light

How it works

Driver seat occupant classification sensor D contributes its own reading to the restraint system's assessment of the seat. B00B3 identifies a fault associated with sensor D or its circuit, rather than sensors A, B, C, or E; the code alone does not reveal whether the sensor or wiring failed.

Common causes

Most likely first.

1. Faulty driver seat occupant classification sensor D
2. Damaged wiring or connector beneath the seat
3. Sensor readings affected by seat or upholstery damage
4. Fault in the restraint control module

Symptoms

• Warning light or symbol related to the affected system
• Comfort or safety function impaired

How to diagnose it

1. Scan the restraint module for B00B3 and related codes, and record available driver-seat sensor data before clearing codes.
2. Check whether sensor D's reading is absent or erratic and whether the code returns after a restart.
3. Inspect the driver-seat cushion and upholstery for damage or changes near the sensor D sensing area.
4. Following the manufacturer's safety procedure, inspect sensor D's connector and under-seat wiring for corrosion, looseness, or physical damage.
5. Test sensor D and its circuit using the manufacturer's specifications and compare with other seat-sensor readings if the scan tool provides them.
6. If sensor D and its wiring pass, check module connections and perform restraint-module diagnostics.

Common fixes

• Correct upholstery or seat damage interfering with sensor D.
• Reconnect and secure the sensor D connector.
• Repair damaged wiring or terminals in the sensor D circuit.
• Replace driver seat occupant classification sensor D if the prescribed tests confirm it has failed.
• Repair or replace the restraint control module only if diagnostics identify it as the cause.

Can I keep driving?

The restraint system may not assess the driver seat correctly during a crash. Have the fault checked promptly and drive with the understanding that airbag protection may be affected.