Engine-Codes.com
Engine-Codes – Scion – B1676 Scion

B1676 Scion Code - Lost Communication With Rear Floor Airbag Sensor RH

Quick Answer

The B1676 diagnostic trouble code (DTC) for Scion vehicles indicates that there is a communication issue with the rear floor airbag sensor on the right-hand side of the vehicle. Common causes include Faulty rear floor airbag sensor RH, Wiring issues such as a short circuit or open circuit, Malfunctioning ECU. 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
B1676 Scion indicates Lost Communication With Rear Floor Airbag Sensor RH.
Common causes
Common causes include Faulty rear floor airbag sensor RH, Wiring issues such as a short circuit or open circuit, Malfunctioning ECU.
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 14, 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 B1676 Scion Description

The B1676 diagnostic trouble code (DTC) for Scion vehicles indicates that there is a communication issue with the rear floor airbag sensor on the right-hand side of the vehicle. This sensor is responsible for detecting impacts or collisions that may trigger the deployment of the airbag in the rear of the vehicle. When communication with this sensor is lost, it can lead to a potential safety hazard as the airbag system may not function properly in the event of an accident.

OBDII Code B1676 Scion - Lost Communication With Rear Floor Airbag Sensor RH
B1676 Scion Code - Lost Communication With Rear Floor Airbag Sensor RH

Common Causes of B1676 Scion

  1. Faulty rear floor airbag sensor RH.
  2. Wiring issues such as a short circuit or open circuit.
  3. Malfunctioning ECU.
  4. Software glitches in the vehicle's computer system.
  5. Physical damage to the sensor due to impact or corrosion.

Symptoms of B1676 Scion

  1. Airbag warning light illuminated on the dashboard.
  2. Inability to deploy the rear airbag in the event of a collision.
  3. Loss of communication with other airbag sensors in the vehicle.
  4. Diagnostic trouble codes related to the airbag system stored in the ECU.

How to Fix B1676 Scion

  1. Begin by conducting a thorough visual inspection of the wiring harness connected to the rear floor airbag sensor RH to check for any visible damage or loose connections.
  2. Use a multimeter to test the continuity of the wiring to ensure that there are no open circuits.
  3. If the wiring checks out, proceed to test the rear floor airbag sensor RH itself using a scan tool to check for proper communication with the ECU.
  4. If the sensor is found to be faulty, it will need to be replaced with a new one following the manufacturer's guidelines.
  5. Clear the DTC from the ECU memory using a scan tool and perform a test drive to ensure that the issue has been resolved.

Cost to Fix B1676 Scion

The cost of repairing a lost communication issue with the rear floor airbag sensor RH can vary depending on the specific cause of the problem. In general, the cost of replacing the sensor itself can range from $200 to $500, including parts and labor. Additional costs may apply if wiring repairs or ECU reprogramming are necessary. It is advisable to consult with a professional mechanic to get an accurate estimate based on the specific circumstances of your vehicle. Keep in mind that labor rates at auto repair shops can vary, so it's recommended to inquire about rates in your local area.

Need more information about the B1676 Scion code?

Need more information on how to fix the B1676 Scion code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1676 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 B1676 Scion Code

1. What does OBDII code B1676 mean on a Scion?

B1676 indicates a "Lost Communication With Rear Floor Airbag Sensor RH," meaning the vehicle's system has trouble communicating with the right-hand rear floor airbag sensor.

2. What are the symptoms of code B1676 on a Scion?

Symptoms may include an illuminated airbag warning light, the airbag system being disabled, or lack of deployment in the event of a collision.

3. What causes code B1676 on a Scion?

Common causes include damaged wiring or connectors, a faulty rear floor airbag sensor (RH), or issues with the airbag control module.

4. Can I drive my Scion with code B1676?

Driving is possible, but the airbag system may not function properly, increasing the risk of injury in an accident. It's recommended to address the issue promptly.

5. How do I diagnose code B1676 on a Scion?

Start by scanning for codes, inspecting the wiring and connectors near the rear floor airbag sensor, and testing the sensor and associated circuits for faults.

6. How do I fix code B1676 on a Scion?

Repairs may include replacing a damaged rear floor airbag sensor, repairing or replacing damaged wiring or connectors, or reprogramming the airbag control module.

7. How much does it cost to repair code B1676 on a Scion?

Repair costs vary but may range from $100 to $500 depending on whether it's a wiring issue, sensor replacement, or module repair.

8. Can I reset the airbag light after fixing code B1676?

Yes, after repairs, use an OBDII scanner to clear the code and reset the airbag system. However, ensure the issue is fully resolved before clearing the code.

9. What tools are needed to troubleshoot code B1676 on a Scion?

You'll need an OBDII scanner, a multimeter for testing wiring, and potentially a service manual to locate the rear floor airbag sensor and wiring diagrams.

10. Can a faulty airbag control module cause code B1676?

Yes, if the control module fails to send or receive signals to the rear floor airbag sensor (RH), it can trigger this code.

Discuss the causes and fixes for B1676 Scion OBDII Code

Submit a New Comment

Code B1676 Scion comments

No comments found for this page.