B1928 Code - Air Bag Safing Sensor Output Circuit Failure
Quick Answer
The Air Bag Control Module monitors the Air Bag Safing Sensor. Common causes include Faulty Air Bag Safing Sensor, Air Bag Safing Sensor harness is open or shorted, Air Bag Safing Sensor 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
- B1928 indicates Air Bag Safing Sensor Output Circuit Failure.
- Common causes
- Common causes include Faulty Air Bag Safing Sensor, Air Bag Safing Sensor harness is open or shorted, Air Bag Safing Sensor 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 B1928 Description
What are the Possible Causes of the DTC B1928?
- Faulty Air Bag Safing Sensor
- Air Bag Safing Sensor harness is open or shorted
- Air Bag Safing Sensor circuit poor electrical connection
- Faulty Air Bag Control Module
How to Fix the DTC B1928?
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 B1928 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.
Need more information about the B1928 code?
Need more information on how to fix the B1928 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the B1928 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- B1928 Lexus — Short To Positive In Rear Pretensioner Squib LH Circuit
- B1928 Scion — Short To Positive In Rear Pretensioner Squib LH Circuit
- B1928 Toyota — Short To Positive In Rear Pretensioner Squib LH Circuit
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 B1928 Code
What does OBDII code B1928 mean?
OBDII code B1928 indicates a failure in the airbag safing sensor output circuit, which is responsible for determining whether to deploy the airbags during a collision.
What are the common symptoms associated with code B1928?
Common symptoms include the airbag warning light being illuminated on the dashboard and possible airbag system malfunctions, such as non-deployment during an accident.
What can cause the B1928 code to trigger?
Causes may include a faulty safing sensor, damaged wiring or connectors in the airbag system, or issues with the vehicle's airbag control module.
How can I diagnose the issue related to code B1928?
To diagnose the issue, use an OBDII scanner to confirm the code, inspect the wiring and connectors for damage, and test the safing sensor and airbag control module for proper functionality.
Can I clear the B1928 code without fixing the problem?
While you can clear the code using an OBDII scanner, it is not recommended because the underlying issue must be addressed to ensure the airbag system functions correctly.
What should I do if I see the B1928 code?
It is advisable to take your vehicle to a qualified mechanic or dealership to properly diagnose and repair the airbag system to ensure safety.
Are there any safety risks associated with code B1928?
Yes, if the safing sensor circuit is faulty, it can prevent the airbags from deploying in the event of a collision, posing a significant safety risk.
How much might it cost to repair a B1928 code issue?
Repair costs can vary widely depending on the cause, but they may range from $100 for minor wiring repairs to $1,000 or more for a defective safing sensor or airbag control module replacement.
Can I perform the repairs for code B1928 myself?
If you have experience with automotive electrical systems and safety protocols, you may attempt the repairs, but it is generally recommended to have a professional handle airbag system repairs due to safety concerns.
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