What Does B00CB Mean?
This code indicates that the Body Control Module (BCM) or Occupant Restraint Control Module has detected a fault in passenger seat occupant position sensor 'E', which is part of the advanced airbag system. This sensor is one of multiple sensors in the seat that monitors occupant weight, position, and posture to optimize airbag deployment. The 'subfault' designation indicates a secondary or internal circuit fault within this specific sensor element.
Safety Warning
This is a critical safety issue as it may prevent proper airbag deployment or cause unintended deployment in a collision. The passenger airbag may be disabled or function incorrectly. Continue driving with extreme caution and repair immediately; avoid having passengers in the affected seat until repaired.
Common Causes
45%
Faulty seat occupant position sensor 'E' mat or pressure sensor element within the seat cushion
30%
Damaged or corroded wiring harness connector under the passenger seat due to moisture, debris, or physical damage
15%
Short circuit or open circuit in wiring between sensor and control module caused by seat movement or chafing
10%
Failed occupant restraint control module or BCM internal circuit for sensor 'E' input channel
Diagnostic Steps
1
Perform a thorough visual inspection under the passenger seat for any visible damage to wiring harnesses, connectors, or the seat cushion sensor mat; look for water intrusion, corrosion, loose connections, or physical damage from objects under the seat
2
Using a digital multimeter, check the resistance values of seat occupant position sensor 'E' according to manufacturer specifications (typically 100-5000 ohms depending on design); verify continuity and check for shorts to ground or power
3
Inspect the connector terminals at both the seat sensor and the control module end for corrosion, bent pins, or moisture; clean and apply dielectric grease if corrosion is present, then reconnect and retest
4
Monitor live data stream from the occupant classification system while applying controlled pressure to different areas of the passenger seat to verify sensor 'E' response; compare readings to other functional sensors if available
5
If all wiring and sensor resistance tests pass, suspect internal control module failure; perform voltage supply check to sensor (typically 5V reference) to verify control module is providing proper power and ground
6
After repair, clear codes, perform a complete occupant classification system calibration or relearn procedure as specified by manufacturer, then test system with known weights to verify proper airbag indicator lamp function
Estimated Repair Cost
$200 - $1,200
Parts + labor, varies by vehicle and location
This code indicates that the Body Control Module (BCM) or Occupant Restraint Control Module has detected a fault in passenger seat occupant position sensor 'E', which is part of the advanced airbag system. This sensor is one of multiple sensors in the seat that monitors occupant weight, position, an...
The most common cause of B00CB (Passenger Seat Occupant Position Sensor "E" (Subfault)) is: Faulty seat occupant position sensor 'E' mat or pressure sensor element within the seat cushion
Typical repair costs for B00CB range from $200 to $1,200, depending on the vehicle, location, and whether you do it yourself or go to a shop.
This is a critical safety issue as it may prevent proper airbag deployment or cause unintended deployment in a collision. The passenger airbag may be disabled or function incorrectly. Continue driving with extreme caution and repair immediately; avoid having passengers in the affected seat until repaired.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B00CB to identify the root cause.
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Quick Info
Category
Body
System
Occupant Restraint System (Advanced Airbag System)
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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