Home / DTC / B00CB — Passenger Seat Occupant Position Sensor E

B00CB — Passenger Seat Occupant Position Sensor E

Detailed page for trouble code B00CB.

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Code

B00CB

Generic B — Body

Passenger Seat Occupant Position Sensor E

Brand: Generic
Type: B — Body
AI status
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Page language: EN

Causes

  • Intermittent or open/shorted wiring between sensor and occupant classification module (OCM)
  • Poor connector contact or corrosion at the seat sensor connector
  • Failed occupant position sensor (internal fault)
  • Faulty occupant classification/airbag control module or software glitch
  • Improper seat installation, damage to seat frame or sensor mounting
  • Water intrusion or physical damage to the sensor or harness

Symptoms

  • Passenger airbag status light may show OFF/ON incorrectly or flash
  • SRS/airbag warning lamp illuminated on dash
  • Possible chime or message indicating passenger seat fault
  • Passenger airbag may be disabled or the system may enter a fallback/limp state
  • Stored B00CB (and possibly related B‑codes) in body/airbag module

What to check

  • Record freeze frame and all airbag/occupant-classification related DTCs from the diagnostic tool
  • Visually inspect passenger seat area: seat tracks, connectors under seat, sensor mounting, signs of water or damage
  • Verify connector is fully seated; inspect for bent, corroded or pushed‑out pins
  • With ignition ON (or following manufacturer test procedure) measure reference and ground at the sensor connector
  • Perform wiggle test of the seat wiring while monitoring live data/voltage to reproduce the fault
  • Check for required post-repair or calibration procedures (service bulletins)

Signal parameters

  • Reference supply: typically 5 V reference (verify exact spec for vehicle) at sensor connector with ignition ON
  • Sensor signal: variable voltage (commonly ~0.5–4.5 V depending on position) or resistance that changes as seat/weight/position changes — should be stable and change smoothly when seat/occupant moves
  • Ground:
  • Open circuit: infinite/very high resistance between sensor and module pins
  • Short to power: signal near battery voltage (~12 V) or short to ground: signal near 0 V

Diagnostic algorithm

  1. Read and record all related airbag/occupant classification DTCs and freeze frame data with a capable scanner
  2. Follow SRS safety procedures before working on seat/airbag components (disable airbag system per manufacturer instructions)
  3. Visually inspect sensor, harness, and connectors for damage, corrosion, or water intrusion; repair or secure as needed
  4. Check connector pin condition and continuity: disconnect connector and measure reference voltage, signal, and ground at harness side with connectors mated/unmated as appropriate
  5. Measure sensor output while moving the seat or occupant weight distribution (if safe) to confirm smooth changing signal; look for intermittent dropouts
  6. Perform continuity/resistance tests between sensor connector and occupant classification module to detect opens/shorts – repair wiring as required
  7. If wiring and connectors are good, replace suspect sensor (Seat Occupant Position Sensor E) and retest
  8. If replacement does not clear fault, test/replace occupant classification or airbag control module per manufacturer instructions and perform required calibrations/relearns
  9. Clear codes and perform final confirmation test drive or occupant changes to ensure code does not return

Likely causes

  • Broken/shorted wiring harness under the passenger seat
  • Corroded or pushed-back connector pins at the sensor or module
  • Sensor element failure due to impact or moisture
  • Module input circuit fault or intermittent connector at module

Fault status

⚠️ Status
B00CB — Passenger Seat Occupant Position Sensor E circuit fault (open/short/intermittent). Follow SRS precautions when servicing.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

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