B1627 Lexus Code - Lost Communication With Side Airbag Sensor Left
Quick Answer
The Side Collision Sensor Left (LH) circuit (to determine deployment of the Front Seat Side Airbag Assembly LH and Curtain Shield Airbag Assembly LH) is composed of the Center Airbag Sensor Assembly, Side Airbag Sensor LH and Rear Airbag Sensor LH. Common causes include Faulty Side Airbag Sensor Left (LH), Faulty Rear Airbag Sensor Left (LH), Faulty Center Airbag Sensor Assembly. 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
- B1627 Lexus indicates Lost Communication With Side Airbag Sensor Left.
- Common causes
- Common causes include Faulty Side Airbag Sensor Left (LH), Faulty Rear Airbag Sensor Left (LH), Faulty Center Airbag Sensor Assembly.
- 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 B1627 Lexus Description
What are the Possible Causes of the DTC B1627 Lexus?
- Faulty Side Airbag Sensor Left (LH)
- Faulty Rear Airbag Sensor Left (LH)
- Faulty Center Airbag Sensor Assembly
- Center Airbag Sensor Assembly harness is open or shorted
- Center Airbag Sensor Assembly circuit poor electrical connection
How to Fix the DTC B1627 Lexus?
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 B1627 Lexus 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 B1627 Lexus Code
1. What are the common symptoms of OBDII code B1627 "Lost Communication With Side Airbag Sensor Left" in a Lexus?
- Common symptoms include the airbag warning light staying illuminated on the dashboard and potential issues with the side airbag system.
2. What are the possible causes of OBDII code B1627 in a Lexus related to the side airbag sensor on the left side?
- Possible causes include a faulty side airbag sensor, damaged wiring or connectors, a blown fuse, or a communication error within the airbag system.
3. How can I diagnose the cause of OBDII code B1627 "Lost Communication With Side Airbag Sensor Left" in my Lexus?
- Diagnosis involves using an OBDII scanner to retrieve the specific fault code and then inspecting the side airbag sensor, wiring, and connectors for any visible damage or issues.
4. Can I continue driving my Lexus with OBDII code B1627 active?
- It is not recommended to drive the vehicle with an active airbag system fault code, as it may indicate potential safety risks in the event of a collision.
5. What are some repair tips for resolving OBDII code B1627 in a Lexus?
- Repair tips may include checking and repairing any damaged wiring or connectors, replacing the faulty side airbag sensor, or resetting the airbag system after fixing the issue.
6. Is it possible to reset OBDII code B1627 in a Lexus without fixing the underlying issue?
- While you can clear the fault code with an OBDII scanner, it is crucial to address the root cause of the problem to ensure the safety and functionality of the airbag system.
7. Can a DIY enthusiast fix OBDII code B1627 in a Lexus, or is professional assistance necessary?
- Depending on your skill level and access to tools, some DIY enthusiasts may be able to diagnose and resolve the issue themselves, but it is recommended to seek professional help for airbag system repairs.
8. How much does it typically cost to repair OBDII code B1627 in a Lexus at a dealership or repair shop?
- Repair costs can vary depending on the specific cause of the fault, but it may involve parts replacement, labor costs, and diagnostic fees, which could range from a few hundred to over a thousand dollars.
9. Are there any safety precautions I should take when working on the airbag system to fix OBDII code B1627 in my Lexus?
- It is essential to disconnect the vehicle's battery and wait for the airbag system to fully discharge before working on any components to prevent accidental deployment and ensure safety.
10. How long does it typically take to repair OBDII code B1627 "Lost Communication With Side Airbag Sensor Left" in a Lexus?
- The repair time can vary based on the complexity of the issue and the availability of parts, but it may take a few hours to a full day for a professional technician to diagnose and fix the problem.
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