B00C2 medium Severity

B00C2: Passenger Seat Occupant Classification Sensor C (Subfault)

May illuminate airbag/vehicle safety light; does not typically affect engine or drivability but impacts occupant safety system behavior

Overview

OBD‑II trouble code B00C2 indicates a fault with the passenger seat occupant classification sensor C, part of the occupant classification/airbag suppression system.

Common Symptoms

  • Airbag warning light illuminated on instrument cluster
  • Possible passenger airbag disable/incorrect status indication

Most Common Causes

Faulty passenger seat occupant classification sensor C medium

Sensor itself may have failed or be out of spec.

Open or shorted harness to sensor C medium

Wiring issues causing intermittent or no signal.

Poor electrical connection at sensor circuit medium

Corroded connector or pin contact issues.

Faulty airbag/occupant classification control module low

Module that reads sensor input may be defective.

Diagnostic Steps

  1. Verify fault code presence and freeze frame data with OBD‑II scanner
    Expected: B00C2 present as stored or pending code
    Interpretation: Confirms issue is recurring and logged.
  2. Inspect physical connector and wiring harness for sensor C for damage, corrosion, or disconnection
    Expected: Wiring intact with secure connector
    Interpretation: If wiring is damaged or connector loose, this is likely cause.
  3. Perform continuity and resistance checks on sensor C circuit
    Expected: Continuity within service spec and no shorts to ground or battery
    Interpretation: Faulty electrical path indicates wiring/connector repair needed.
  4. Replace passenger seat occupant classification sensor C if wiring and connectors are good
    Expected: Code should clear and not return post replacement
    Interpretation: Replacement of sensor resolves fault if issue internal to sensor.
  5. If sensor and wiring are good, test/replace airbag/occupant classification control module
    Expected: Code no longer sets after module replacement
    Interpretation: Control module failure is less common but possible.

Repair Solutions

Repair or replace damaged wiring/connector for sensor C medium
Estimated Cost: $50 - $200

Costs vary based on labor and whether aftermarket parts are used.

Replace passenger seat occupant classification sensor C medium
Estimated Cost: $200 - $600

Sensor cost varies by OEM and model; labor required to access seat electronics.

Replace airbag/occupant classification control module hard
Estimated Cost: $300 - $1000

Module replacement is expensive; ensure diagnosis confirms module failure.

Common Misdiagnoses

Avoid these common diagnostic mistakes:

  • Assuming general airbag system fault unrelated to occupant classification sensor wiring

Frequently Asked Questions

Technical definition of B00C2 OBD-II Code

The B00C2 code stands for Passenger Seat Occupant Classification Sensor C (Subfault). This generally indicates an issue with the Sensors system.

Is it safe to drive with a B00C2 code?

This is a medium priority issue. May illuminate airbag/vehicle safety light; does not typically affect engine or drivability but impacts occupant safety system behavior

How do I know if I have code B00C2?

You may experience the following: Airbag warning light illuminated on instrument cluster, Possible passenger airbag disable/incorrect status indication.

What causes the B00C2 code?

This code is frequently triggered by: Faulty passenger seat occupant classification sensor C, Open or shorted harness to sensor C, Poor electrical connection at sensor circuit.

Is B00C2 expensive to fix?

Expect to pay around $200 if the issue is a Repair or replace damaged wiring/connector for sensor C, but up to $1000 if the Replace airbag/occupant classification control module needs replacement.

Is B00C2 a generic or manufacturer-specific code?

B00C2 is not specific to any one brand. It can appear on Ford, Dodge, Toyota, Honda, Jeep, and other vehicles.

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