AutoCodes – Toyota – B1808 Toyota

B1808 Toyota Code - Short To Positive In Front Passenger Side Squib Circuit

Quick Answer

The Front Passenger Side Squib Circuit consists of the Center Airbag Sensor Assembly and the Front Passenger Airbag Assembly. Common causes include Instrument panel wire, Faulty Front Passenger Airbag Assembly (Front Passenger Side Squib), Front Passenger Airbag Assembly harness is open or shorted. 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: B1808 Toyota indicates Short To Positive In Front Passenger Side Squib Circuit.
Common causes: Common causes include Instrument panel wire, Faulty Front Passenger Airbag Assembly (Front Passenger Side Squib), Front Passenger Airbag Assembly harness is open or shorted.
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.

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Code Popularity 6,738

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 25, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1808 Toyota Description

The Front Passenger Side Squib Circuit consists of the Center Airbag Sensor Assembly and the Front Passenger Airbag Assembly. The circuit signals the Supplemental Restraint System (SRS) to deploy when deployment conditions are met. The Diagnostic Trouble Code (DTC) is recorded when the airbag sensor assembly detects a short circuit to a positive signal in the Front Passenger Side Squib Circuit for 0.5 seconds.

OBDII Code B1808 Toyota - Short To Positive In Front Passenger Side Squib Circuit - AutoCodes.com — B1808 Toyota Code - Short To Positive In Front Passenger Side Squib Circuit

What does this mean?

What are the Possible Causes of the DTC B1808 Toyota?

Instrument panel wire
Faulty Front Passenger Airbag Assembly (Front Passenger Side Squib)
Front Passenger Airbag Assembly harness is open or shorted
Front Passenger Airbag Assembly circuit poor electrical connection
Faulty Center Airbag Sensor Assembly

How to Fix the DTC B1808 Toyota?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1808 Toyota code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the B1808 Toyota code?

Need more information on how to fix the B1808 Toyota code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1808 Toyota code diagnosed by a professional: Find a repair shop in your area

Information for Specific Toyota Models

B1808 2013 Toyota RAV4 — Short To Positive In Front Passenger Side Squib Circuit
B1808 2014 Toyota RAV4 — Short To Positive In Front Passenger Side Squib Circuit
B1808 2015 Toyota RAV4 — Short To Positive In Front Passenger Side Squib Circuit
B1808 2016 Toyota RAV4 — Short To Positive In Front Passenger Side Squib Circuit
B1808 2017 Toyota RAV4 — Short To Positive In Front Passenger Side Squib Circuit
B1808 2018 Toyota RAV4 — Short To Positive In Front Passenger Side Squib Circuit

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 B1808 Toyota Code

1. What are the common symptoms of OBDII code B1808 Toyota (Short To Positive In Front Passenger Side Squib Circuit)?

The common symptoms include the airbag warning light illuminated on the dashboard, non-deployment of the passenger side airbag, and potential communication errors with the airbag system.

2. What can cause the OBDII code B1808 Toyota to trigger?

The code B1808 is typically triggered by a short to positive in the front passenger side squib circuit, which may be caused by damaged wiring, faulty connectors, or issues with the airbag control module.

3. How can I diagnose the source of the short to positive in the front passenger side squib circuit?

To diagnose the issue, you can perform a visual inspection of the wiring harness and connectors for any signs of damage or corrosion. Additionally, using a multimeter to test for continuity and resistance can help pinpoint the location of the short.

4. Is it safe to drive with the OBDII code B1808 Toyota active?

It is not recommended to drive with the B1808 code present, as it indicates a potential issue with the passenger side airbag system, which could result in the airbag not deploying during a collision.

5. Can I repair the short to positive in the front passenger side squib circuit myself?

Repairing the short to positive in the squib circuit may require advanced electrical diagnostic skills and knowledge of airbag systems. It is recommended to have the issue diagnosed and repaired by a qualified technician.

6. How much does it typically cost to repair the B1808 code on a Toyota?

The cost of repairing the B1808 code can vary depending on the extent of the damage and the specific components that need to be replaced. It is best to obtain a quote from a certified mechanic or dealership.

7. Will resetting the OBDII code B1808 clear the issue permanently?

Resetting the code may temporarily turn off the warning light, but if the underlying issue causing the short to positive in the squib circuit is not addressed, the code is likely to reappear.

8. Are there any recalls or technical service bulletins related to the B1808 code in Toyota vehicles?

It is recommended to check with Toyota dealerships or online databases for any recalls or technical service bulletins related to the B1808 code in specific Toyota models.

9. How long does it typically take to repair the short to positive in the front passenger side squib circuit?

The repair time can vary depending on the complexity of the issue and the availability of parts. In some cases, it may take a few hours to a full day to diagnose and repair the problem.

10. Can the B1808 code be caused by a faulty airbag sensor?

While a faulty airbag sensor can potentially contribute to the triggering of the B1808 code, it is more commonly associated with wiring or connector issues in the front passenger side squib circuit.