WOMS
B code body High severity

B2235 Air Bag Passenger Inflator Circuit

The OBD2 code B2235 indicates a malfunction in the passenger airbag inflator circuit, which may affect the deployment of the airbag in the event of a collision

Definition

The OBD2 code B2235 indicates a malfunction in the passenger airbag inflator circuit, which may affect the deployment of the airbag in the event of a collision

Common causes

  • Faulty passenger airbag inflator
  • Open or shorted wiring in the inflator circuit
  • Poor connections or corroded terminals
  • Malfunctioning airbag control module
  • Faulty passenger airbag sensor
  • Damaged or frayed wiring harness
  • Issues with the vehicle's electrical system

Common misdiagnoses

  • Faulty airbag control module
  • Wiring issues or shorts in the airbag system
  • Defective passenger seat occupancy sensor
  • Malfunctioning airbag inflator
  • Issues with the seatbelt pretensioner
  • Problems with the vehicle's electrical system
  • Incorrectly installed or damaged airbag components

Troubleshooting steps

  1. 1. Check for Additional Codes

    Use an OBD-II scanner to check for any other related trouble codes. This can provide more context and help identify if there are multiple issues

  2. 2. Inspect the Airbag System

    Visual Inspection: Check the airbag system components, including the passenger airbag module, wiring harness, and connectors for any visible damage, corrosion, or loose connections

  3. 3. Connector Check

    Ensure that all connectors are securely attached and free of dirt or moisture

  4. 4. Examine the Inflator Circuit

    Wiring Inspection: Look for frayed or damaged wires in the inflator circuit. Pay special attention to areas where the wiring may be exposed to heat or mechanical wear

  5. 5. Continuity Test

    Use a multimeter to check for continuity in the inflator circuit. This can help identify any breaks in the wiring

  6. 6. Check the Airbag Module

    Module Functionality: If the wiring and connectors are intact, the issue may lie within the airbag module itself. Testing or replacing the airbag module may be necessary

  7. 7. Reset the System

    After repairs, clear the codes and reset the airbag system to see if the code returns

  8. 8. Inspect the SRS (Supplemental Restraint System) Components

    Sensor Check: Inspect any sensors related to the airbag system, as a malfunctioning sensor can trigger the B2235 code

  9. 9. Ground Connections

    Ensure that all ground connections related to the airbag system are clean and secure

  10. 10. Check for Recalls or Service Bulletins

    Research if there are any recalls or Technical Service Bulletins (TSBs) related to the airbag system for your vehicle make and model. Sometimes manufacturers issue fixes for known issues

  11. 11. Consult a Professional

    If the issue persists after performing the above steps, it may be best to consult a professional mechanic or an automotive technician who specializes in airbag systems. They have the tools and expertise to diagnose and repair complex airbag issues

  12. 12. Safety Precautions

    Always take necessary safety precautions when working with airbag systems. Disconnect the vehicle's battery and wait for a minimum of 10 minutes before working on the airbag system to avoid accidental deployment. By following these troubleshooting steps, you can systematically identify and address the cause of the B2235 code