B00B1

Code

Generic B — Body

Driver Seat Occupant Classification Sensor B

Brand: Generic

Type: B — Body

Views: UK: 21 EN: 57 RU: 22

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Open, short or intermittent wiring/connectors between sensor B and the restraint control module
Faulty occupant classification sensor pad or sensor element (pressure, resistance, or capacitive mat)
Corrosion, moisture or physical damage to the sensor mat or connector
Poorly fitted or aftermarket seat cover interfering with sensor operation
Faulty restraint control module or internal software/firmware error
Previous improper repairs, pinched wires, or seat removal damage

Scan airbag/SRS module to confirm B00B1 and view freeze frame/live data
Visually inspect seat sensor connector and wiring for damage, corrosion, or moisture
Check seating area for foreign objects or wet/soiled condition that could affect the mat
Verify seat installation and that covers/pads are OEM and fitted correctly
Measure continuity and resistance of sensor circuit according to service manual
Follow SRS safety procedures (battery disconnect or SRS disable) before performing repairs

Sensor types vary: may be analog resistance/voltage output, capacitive, or multiplexed data — consult vehicle service manual
Typical analog sensor: variable resistance or voltage proportional to load; expected change when weight applied vs. removed
Some systems report classified occupant state over LIN or CAN bus rather than raw voltage; watch for valid classification messages
Expected parameter ranges and thresholds are manufacturer-specific — use factory data for pass/fail criteria
Look for noisy, stuck, implausible, or out-of-range values in live data when testing

Retrieve and record all related SRS/occupant classification codes and freeze frame data with a capable scan tool.
Visually inspect the seat, sensor mat area, connector, and wiring for damage, corrosion, water ingress or loose terminals.
With manufacturer SRS procedures followed, unplug and reseat the occupant sensor connector; check for bent pins.
Monitor live data (raw sensor values or classification messages) while applying known loads (seat empty vs. seated) to see if sensor B responds plausibly.
Measure resistance/voltage of the sensor circuit per service manual. Check for opens/shorts to ground or battery and compare to factory specs.
If wiring/connector checks good and sensor does not respond or values are out of spec, remove seat and bench-test or replace the occupant classification sensor mat per OEM procedure.
After repair or replacement, clear codes and confirm proper operation and absence of faults during multiple key cycles and road test as required.
If faults persist with a known-good sensor, consider restraint control module fault and follow module diagnostics or replacement guidelines.