AutoCodesScion – B1635 Scion

B1635 Scion Code - Rear Airbag Sensor Left Circuit Malfunction

Quick Answer

The Side Airbag Sensor Left (LH) or Rear Airbag Sensor Right (RH) consists of the Diagnostic Circuit, the Lateral Deceleration Sensor, etc. Common causes include Faulty Rear Airbag Sensor Left (LH), Rear Airbag Sensor Left harness is open or shorted, Rear Airbag Sensor Left circuit poor electrical connection. 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
B1635 Scion indicates Rear Airbag Sensor Left Circuit Malfunction.
Common causes
Common causes include Faulty Rear Airbag Sensor Left (LH), Rear Airbag Sensor Left harness is open or shorted, Rear Airbag Sensor Left circuit poor electrical connection.
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 692
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Oct 10, 2022
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Code B1635 Scion Description

The Side Airbag Sensor Left (LH) or Rear Airbag Sensor Right (RH) consists of the Diagnostic Circuit, the Lateral Deceleration Sensor, etc. If the Center Airbag Sensor receives signals from the Lateral Deceleration Sensor, it determines whether the Supplemental Restraint System (SRS) should be activated. The Diagnostic Trouble Code (DTC) B1635 is stored when a malfunction is detected in the Rear Airbag Sensor Left circuit.
OBDII Code B1635 Scion - Rear Airbag Sensor Left Circuit Malfunction - AutoCodes.com
B1635 Scion Code - Rear Airbag Sensor Left Circuit Malfunction

What are the Possible Causes of the DTC B1635 Scion?

  • Faulty Rear Airbag Sensor Left (LH)
  • Rear Airbag Sensor Left harness is open or shorted
  • Rear Airbag Sensor Left circuit poor electrical connection
  • Faulty Center Airbag Sensor Assembly

How to Fix the DTC B1635 Scion?

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 B1635 Scion 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 B1635 Scion code?

Need more information on how to fix the B1635 Scion code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1635 Scion code diagnosed by a professional: Find a repair shop in your area

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 B1635 Scion Code

1. What are common symptoms of OBDII code B1635 in a Scion related to the rear airbag sensor left circuit malfunction?

- Common symptoms include the airbag warning light staying illuminated on the dashboard and potential issues with the rear airbag system.

2. What are possible causes of the rear airbag sensor left circuit malfunction in a Scion triggering OBDII code B1635?

- Possible causes can include damaged wiring or connectors, a faulty rear airbag sensor, or issues with the airbag control module.

3. How serious is the OBDII code B1635 indicating a rear airbag sensor left circuit malfunction in a Scion?

- This code is related to the proper function of the rear airbag system, so it is crucial to address it promptly to ensure the airbags deploy correctly in case of an accident.

4. Can I continue driving my Scion with the OBDII code B1635 present?

- It is not recommended to drive the vehicle with this code active, as it indicates a malfunction in the rear airbag system that could affect its proper operation.

5. How can I diagnose and repair the rear airbag sensor left circuit malfunction causing OBDII code B1635 in my Scion?

- Diagnosing and repairing this issue typically involves inspecting the wiring, connectors, and sensor for damage, and testing the airbag system components for proper function.

6. Is it possible to reset the OBDII code B1635 in a Scion without fixing the underlying issue?

- While you can clear the code temporarily, it will likely reappear until the root cause of the rear airbag sensor left circuit malfunction is addressed.

7. Are there any safety precautions to take when working on the rear airbag sensor left circuit in a Scion?

- It is crucial to disconnect the vehicle's battery before working on the airbag system to prevent accidental deployment, and to follow proper safety procedures outlined in the service manual.

8. Can a DIY enthusiast with basic automotive knowledge fix the rear airbag sensor left circuit malfunction causing OBDII code B1635 in a Scion?

- While some simple checks like inspecting wiring and connectors can be done by DIYers, diagnosing and repairing airbag system issues often require specialized tools and expertise best left to professionals.

9. How much can I expect to pay to repair the rear airbag sensor left circuit malfunction in my Scion triggering OBDII code B1635?

- Repair costs can vary depending on the specific issue causing the malfunction, but it's advisable to budget for diagnostic fees, parts replacement, and potential labor charges.

10. Will fixing the rear airbag sensor left circuit malfunction causing OBDII code B1635 in my Scion affect the vehicle's safety rating?

- Ensuring the proper function of the airbag system by addressing this issue can help maintain the vehicle's safety rating and ensure the airbags deploy as intended in the event of a collision.

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