B00B0

Code

Generic B — Body

Driver Seat Occupant Classification Sensor A

Brand: Generic

Type: B — Body

Views: UK: 23 EN: 42 RU: 26

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Page language: EN

SRS/airbag warning lamp illuminated
Occupant classification or passenger/driver airbag disable indicator may be wrong or ON
Seatbelt reminder or chime may behave incorrectly
Inability to complete occupant classification calibration
Stored B00B0 and possibly related SRS codes

Read and record all SRS/occupant classification codes and freeze-frame data with an advanced scan tool
Visually inspect the driver seat cushion, seams and underside for water, contamination or damage
Inspect connector at the occupant classification sensor for corrosion, bent pins or looseness
Wiggle-seat test: observe live data while moving seat and connectors to reproduce fault
Check wiring continuity between sensor connector and airbag/OCU module (with ignition OFF and following SRS safety procedures)
Verify sensor supply voltage and ground at the connector with ignition ON (follow manufacturer safety steps)

Supply/reference voltage typically 5 V (verify manufacturer spec) at sensor connector with ignition ON
Sensor output voltage typically 0–5 V or variable resistance/impedance depending on sensor technology
Expected resistance/impedance values vary by design — check OEM spec (example: tens of ohms to kiloohms for resistive mats, or capacitance values for capacitive mats)
CAN/LIN data: occupant classification module posts OCC_STATUS or OCC_CLASS messages to airbag network (verify live data with scan tool)
Stored fault counters and status flags in SRS/OCU live-data may show intermittent/open/short conditions

Read codes and note freeze-frame/live data. Record any related SRS codes.
Attempt to clear codes and perform a second key cycle to see if B00B0 returns (helps identify intermittent faults).
Perform a visual inspection of the driver seat cushion and underside for water, debris, damage or aftermarket items.
Follow vehicle manufacturer SRS safety procedure to disable SRS power (battery disconnect and required wait time) before disconnecting or handling connectors.
Inspect and reseat the occupant classification sensor connector(s). Repair or replace damaged terminals.
With SRS still disabled as required, inspect wiring harness along seat for chafe, broken insulation, or pinched areas. Repair wiring as needed.
Re-enable SRS power per manufacturer procedure. With a qualified scan tool, monitor live data and check sensor supply voltage and output while performing a wiggle test on seat connectors/wiring.
If supply and grounds are good but sensor output is out of range or unstable, replace the occupant classification sensor module or mat assembly.
After any repair or replacement, perform required occupant classification calibration/initialization procedure with manufacturer scan tool and clear codes.
Road test or seat-test to confirm code does not return and that SRS indicators behave normally.