B1637 Scion Code - Lost Communication With Rear Airbag Sensor Left
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
- B1637 Scion indicates Lost Communication With Rear Airbag Sensor Left.
- 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.
Code B1637 Scion Description
What are the Possible Causes of the DTC B1637 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 B1637 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 B1637 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.
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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.
Frequently Asked Questions about B1637 Scion Code
1. What are the common symptoms of OBDII code B1637 in a Scion related to the "Lost Communication With Rear Airbag Sensor Left" issue?
- Common symptoms include the airbag warning light illuminating on the dashboard, potential loss of communication with the left rear airbag sensor, and possible diagnostic trouble codes related to the airbag system.
2. What are the possible causes of OBDII code B1637 in a Scion indicating a communication problem with the rear airbag sensor on the left side?
- Possible causes can include damaged wiring or connectors leading to the rear airbag sensor, a faulty rear airbag sensor itself, or a communication issue within the airbag system.
3. How can I troubleshoot and diagnose the "Lost Communication With Rear Airbag Sensor Left" issue causing OBDII code B1637 in my Scion?
- Begin by inspecting the wiring and connectors leading to the left rear airbag sensor, checking for any visible damage or corrosion. You may also need to use a diagnostic tool to test the communication between the sensor and the vehicle's airbag system.
4. Is it safe to drive my Scion with OBDII code B1637 indicating a communication problem with the rear airbag sensor on the left side?
- It is not recommended to drive the vehicle with any airbag-related issues, as the safety systems may not function correctly in the event of a collision. It is advisable to address the problem promptly to ensure the airbag system's proper operation.
5. Can resetting the OBDII code B1637 in my Scion temporarily fix the communication problem with the rear airbag sensor on the left side?
- Resetting the code may temporarily clear the warning light, but it will not fix the underlying issue causing the communication problem with the rear airbag sensor. It is essential to diagnose and repair the problem to ensure the airbag system's proper functionality.
6. What are some repair tips for addressing OBDII code B1637 related to the "Lost Communication With Rear Airbag Sensor Left" in a Scion?
- Repair tips may include checking and repairing any damaged wiring or connectors, replacing the left rear airbag sensor if necessary, and performing a thorough inspection of the airbag system to ensure proper communication and functionality.
7. Can a DIY enthusiast fix OBDII code B1637 indicating a communication issue with the rear airbag sensor on the left side of a Scion?
- While some basic troubleshooting steps can be taken, addressing airbag system issues, including communication problems, often requires specialized knowledge and tools. It is advisable to consult a professional or experienced technician for proper diagnosis and repair.
8. Are there any recalls or technical service bulletins related to OBDII code B1637 in Scion vehicles for the "Lost Communication With Rear Airbag Sensor Left" issue?
- It is recommended to check with the manufacturer, dealership, or online resources for any recalls or technical service bulletins specific to your Scion model and year related to the communication problem with the rear airbag sensor on the left side.
9. How much does it typically cost to repair OBDII code B1637 in a Scion due to a communication problem with the rear airbag sensor on the left side?
- Repair costs can vary depending on the exact cause of the issue, labor rates, and parts required. It is advisable to obtain diagnostic information from a trusted mechanic or dealership to get an accurate estimate for the repair.
10. Can OBDII code B1637 in a Scion cause the airbags to deploy unexpectedly or not deploy at all in the event of a collision?
- While OBDII code B1637 typically indicates a communication problem with the rear airbag sensor on the left side, it is essential to address the issue promptly to ensure the airbag system's proper operation and avoid potential safety risks in the event of a collision.
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