B1617 Code - Lost Communication with Front Airbag Sensor Left
Quick Answer
The Front Airbag Sensor Left consists of parts including the diagnostic circuit and the frontal deceleration sensor. Common causes include Faulty Front Airbag Sensor Left, Front Airbag Sensor Left harness is open or shorted, Front 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
- B1617 indicates Lost Communication with Front Airbag Sensor Left.
- Common causes
- Common causes include Faulty Front Airbag Sensor Left, Front Airbag Sensor Left harness is open or shorted, Front 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 B1617 Description
What are the Possible Causes of the DTC B1617?
- Faulty Front Airbag Sensor Left
- Front Airbag Sensor Left harness is open or shorted
- Front Airbag Sensor Left circuit poor electrical connection
- Faulty Center Airbag Sensor Assembly
How to Fix the DTC B1617?
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 B1617 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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Need Help with the Code?
Get the B1617 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- B1617 Lexus — Lost Communication with Front Airbag Sensor Left
- B1617 Scion — Lost Communication with Front Airbag Sensor Left
- B1617 Toyota — Lost Communication with Front Airbag Sensor Left
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 B1617 Code
1. What does OBDII code B1617 mean?
Code B1617 indicates a loss of communication between the vehicle's control module and the left front airbag sensor.
2. What are the common symptoms of code B1617?
Symptoms may include an illuminated airbag warning light, lack of airbag functionality, or a stored fault code in the vehicle's system.
3. What causes code B1617 to appear?
This code can be caused by a faulty left front airbag sensor, damaged or corroded wiring, loose connections, or issues with the control module.
4. Is it safe to drive with code B1617 present?
No, it is not safe to drive with this code active because the airbag system may not function properly in the event of an accident.
5. How can I diagnose code B1617?
Start by inspecting the wiring and connectors for the left front airbag sensor, and use a diagnostic scan tool to confirm the loss of communication.
6. Can a weak battery cause code B1617?
Yes, a weak or failing battery can lead to communication issues and may trigger this code.
7. How do you fix code B1617?
Repairs may involve replacing the left front airbag sensor, repairing damaged wiring, cleaning corroded connectors, or addressing control module faults.
8. What tools are needed to troubleshoot code B1617?
A diagnostic scan tool, a multimeter, and basic hand tools are typically needed for troubleshooting this code.
9. Can code B1617 trigger other fault codes?
Yes, communication-related issues can sometimes lead to other airbag system fault codes being stored.
10. Does clearing the code without repairs fix the problem?
No, clearing the code without addressing the underlying issue will not resolve the problem, and the code will likely reappear.
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