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Engine-Codes – Generic – B1805

B1805 Code - Short in Front Passenger Side Squib Circuit

Quick Answer

The B1805 code indicates a short in the front passenger side squib circuit, which refers to the airbag system in the vehicle. Common causes include Damaged wiring leading to the passenger-side squib, Faulty squib component, Blown fuse in the airbag system. 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
B1805 indicates Short in Front Passenger Side Squib Circuit.
Common causes
Common causes include Damaged wiring leading to the passenger-side squib, Faulty squib component, Blown fuse in the airbag system.
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 06, 2024
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Code B1805 Description

The B1805 code indicates a short in the front passenger side squib circuit, which refers to the airbag system in the vehicle. The squib is a component of the airbag system that helps deploy the airbag in the event of a collision. When there is a short in this circuit, it means that there is an electrical issue that is preventing the airbag from functioning properly. This can be a serious safety concern as the airbag may not deploy when needed, putting the vehicle occupants at risk of injury in a crash.

OBDII Code B1805 - Short in Front Passenger Side Squib Circuit
B1805 Code - Short in Front Passenger Side Squib Circuit

Common Causes of B1805

  1. Damaged wiring leading to the passenger-side squib
  2. Faulty squib component
  3. Blown fuse in the airbag system
  4. Malfunctioning airbag control module

Symptoms of B1805

  1. Airbag warning light illuminated on the dashboard
  2. Airbag system fails self-test during startup
  3. Inability to turn off the passenger-side airbag
  4. Erratic deployment of the airbag in a crash

How to Fix B1805

  1. Diagnose the issue by using a scan tool to retrieve the specific fault codes and identify the location of the short in the squib circuit.
  2. Inspect the wiring harness for any visible damage or signs of wear. Repair or replace any damaged wiring.
  3. Test the squib component to determine if it is faulty. Replace the squib if necessary.
  4. Check and replace any blown fuses in the airbag system.
  5. Reset the airbag control module and clear the fault codes to ensure that the issue has been resolved.

Cost to Fix B1805

The typical repair costs for addressing a short in the front passenger side squib circuit can range from $200 to $500, including parts and labor. However, the specific diagnosis time and labor rates at auto repair shops can vary depending on factors such as location, vehicle make and model, and engine type. It is advisable to check local rates for a more accurate estimate before proceeding with the repair. Keep in mind that rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less.

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Code B1805 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 B1805 Code

1. What are the common symptoms of OBDII code B1805 (Short in Front Passenger Side Squib Circuit)?

The common symptoms include an illuminated airbag warning light on the dashboard and a potential loss of functionality of the front passenger airbag.

2. What are the possible causes of OBDII code B1805?

Possible causes of this code include a short circuit in the front passenger side airbag system, damaged wiring or connectors, faulty airbag module, or a defective front passenger airbag.

3. How can I diagnose the issue related to OBDII code B1805?

Diagnosing the issue involves using a diagnostic scanner to retrieve the specific fault codes, inspecting the wiring and connectors in the front passenger side airbag circuit, and testing the components like the airbag module and front passenger airbag for proper functionality.

4. Can I continue driving my vehicle with OBDII code B1805?

It is not recommended to drive the vehicle with an active airbag fault code like B1805, as it indicates a potential safety risk due to the front passenger airbag system being compromised.

5. How can I repair OBDII code B1805 (Short in Front Passenger Side Squib Circuit)?

The repair process involves identifying and fixing the root cause of the short circuit, replacing any damaged wiring or connectors, repairing or replacing the faulty airbag module, and ensuring proper reconnection and testing of the front passenger airbag system.

6. Is it safe to reset or clear the B1805 fault code without addressing the underlying issue?

Clearing the fault code without fixing the underlying problem will only temporarily remove the warning light, but the safety risk associated with the compromised front passenger airbag system will remain. It is crucial to address the root cause of the code.

7. Can a DIY enthusiast repair OBDII code B1805 at home?

While some basic troubleshooting steps can be performed by a DIY enthusiast, dealing with airbag systems requires specialized knowledge and tools. It is recommended to consult a professional technician for proper diagnosis and repair of OBDII code B1805.

8. How long does it typically take to repair OBDII code B1805?

The repair time for OBDII code B1805 can vary depending on the exact cause of the issue and the availability of parts. In general, it may take a few hours to a day to diagnose and fix the problem related to the short in the front passenger side squib circuit.

9. Are there any safety precautions to consider when working on the front passenger side airbag system?

When working on the front passenger side airbag system, it is crucial to disconnect the vehicle's battery to prevent accidental deployment of the airbag. Additionally, following manufacturer's safety procedures and wearing appropriate protective gear is recommended.

10. Will fixing OBDII code B1805 require resetting the airbag system?

After repairing the issue related to OBDII code B1805, it may be necessary to reset the airbag system using a diagnostic scanner to clear the fault code and ensure proper functionality of the front passenger airbag system.

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