B1622 Lexus Code - Lost Communication With Side Airbag Sensor Right
Quick Answer
The Side Collision Sensor Right (RH) circuit (to determine deployment of the Front Seat Side Airbag Assembly RH and Curtain Shield Airbag Assembly RH) is composed of the Center Airbag Sensor Assembly, Side Airbag Sensor RH and Rear Airbag Sensor RH. Common causes include Faulty Side Airbag Sensor Right (RH), Faulty Rear Airbag Sensor Right (RH), 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
- B1622 Lexus indicates Lost Communication With Side Airbag Sensor Right.
- Common causes
- Common causes include Faulty Side Airbag Sensor Right (RH), Faulty Rear Airbag Sensor Right (RH), 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 B1622 Lexus Description
What are the Possible Causes of the DTC B1622 Lexus?
- Faulty Side Airbag Sensor Right (RH)
- Faulty Rear Airbag Sensor Right (RH)
- 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 B1622 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 B1622 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 B1622 Lexus Code
1. What are the common symptoms of OBDII code B1622 in a Lexus related to the lost communication with the side airbag sensor on the right side?
- The common symptoms include the airbag warning light illuminating on the dashboard and potential non-deployment of the side airbag during an accident.
2. What are the possible causes of OBDII code B1622 in a Lexus indicating a lost communication with the right side airbag sensor?
- The possible causes could be a faulty side airbag sensor on the right side, damaged wiring or connectors leading to the sensor, or a communication error within the vehicle's airbag system.
3. How can I diagnose the issue related to OBDII code B1622 in a Lexus myself?
- You can start by visually inspecting the wiring and connectors leading to the right side airbag sensor for any visible damage. Additionally, using an OBDII scanner to read the error code and check for any other related codes can provide more insight into the issue.
4. Is it safe to drive my Lexus with the OBDII code B1622 indicating a communication problem with the right side airbag sensor?
- It is not recommended to drive the vehicle with this issue unresolved, as it may compromise the proper functioning of the side airbag system in the event of an accident.
5. Can resetting the OBDII code B1622 in a Lexus fix the issue temporarily?
- Resetting the code may temporarily turn off the airbag warning light, but it will not fix the underlying problem causing the lost communication with the right side airbag sensor.
6. What are the repair options for addressing OBDII code B1622 in a Lexus related to the side airbag sensor communication problem?
- Repair options may include replacing the faulty side airbag sensor on the right side, repairing or replacing damaged wiring or connectors, and ensuring proper communication within the airbag system.
7. Are there any safety precautions to consider when working on the airbag system to resolve OBDII code B1622 in a Lexus?
- It is essential to disconnect the vehicle's battery and wait for at least 10-15 minutes before working on the airbag system to prevent accidental deployment and ensure safety.
8. What is the typical cost of repairing OBDII code B1622 in a Lexus caused by a lost communication with the right side airbag sensor?
- The cost can vary depending on the exact cause of the issue, but it may involve parts and labor expenses ranging from $200 to $600 or more.
9. Can a DIY enthusiast with automotive knowledge fix OBDII code B1622 in a Lexus independently?
- While some individuals with experience in automotive repair may be able to address the issue themselves, working on the airbag system requires specific expertise and caution due to safety concerns.
10. How often should the side airbag system in a Lexus be inspected to prevent issues like OBDII code B1622 from occurring?
- It is recommended to have the airbag system inspected during regular maintenance checks or whenever the airbag warning light illuminates to address any potential issues promptly.
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