Engine-Codes.com
Engine-Codes – Generic – B273F

B273F Code - Airbag Signal Test Failed

Quick Answer

The B273F diagnostic trouble code indicates that the airbag signal test has failed. Common causes include Faulty airbag sensor, Damaged wiring or connectors in the airbag system, Malfunctioning onboard computer. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
B273F indicates Airbag Signal Test Failed.
Common causes
Common causes include Faulty airbag sensor, Damaged wiring or connectors in the airbag system, Malfunctioning onboard computer.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 11, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code B273F Description

The B273F diagnostic trouble code indicates that the airbag signal test has failed. This means that there is an issue with the communication between the airbag system and the vehicle's onboard computer. The airbag system is a critical safety feature in modern vehicles, designed to deploy in the event of a collision to protect the occupants from serious injury. When the airbag signal test fails, it could mean that the airbags may not deploy properly in the event of an accident, putting the driver and passengers at risk.

OBDII Code B273F - Airbag Signal Test Failed
B273F Code - Airbag Signal Test Failed

Common Causes of B273F

  1. Faulty airbag sensor
  2. Damaged wiring or connectors in the airbag system
  3. Malfunctioning onboard computer
  4. Corrosion in the airbag system components
  5. Impact or damage to the vehicle that may have affected the airbag system

Symptoms of B273F

  1. Airbag warning light illuminated on the dashboard
  2. SRS (Supplemental Restraint System) warning message displayed on the instrument cluster
  3. Inability to reset the airbag warning light
  4. Failure of the airbag system to deploy during a crash test

How to Fix B273F

  1. Diagnose the issue by using a diagnostic scan tool to retrieve the specific fault codes related to the airbag system.
  2. Inspect the airbag sensor, wiring, and connectors for any damage or corrosion. Repair or replace any faulty components.
  3. Clear the fault codes and reset the airbag system using the diagnostic scan tool.
  4. Perform a test to ensure that the airbag system is functioning correctly and that the fault code does not reappear.
  5. If the issue persists, consult with a professional technician to further diagnose and repair the problem.

Cost to Fix B273F

The typical repair costs for addressing the B273F code can range from $200 to $500, depending on the specific cause of the issue and the extent of the repairs needed. This estimate includes parts and labor. However, it is essential to note that the actual cost may vary based on factors such as the location of the repair shop, the vehicle make and model, and the type of engine. Diagnostic time and labor rates at auto repair shops can range from $80 to $150 per hour, so it is advisable to inquire about local rates for a more accurate estimate.

Need more information about the B273F code?

Need more information on how to fix the B273F code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B273F code diagnosed by a professional: Find a repair shop in your area

Code B273F Information for Specific Makes

Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service

  • Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
  • Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
  • Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
  • Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.

Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B273F Code

No Frequently Asked Questions about B273F Code found.

Discuss the causes and fixes for B273F OBDII Code

Submit a New Comment

Code B273F comments

No comments found for this page.