B1902 Scion Code - Short to Ground in Front Pretensioner Squib Right Circuit
Quick Answer
The B1902 Scion code indicates a short to ground in the front pretensioner squib right circuit. Common causes include Wiring harness damage or corrosion, Faulty seatbelt pretensioner squib, Loose or disconnected electrical connectors. 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
- B1902 Scion indicates Short to Ground in Front Pretensioner Squib Right Circuit.
- Common causes
- Common causes include Wiring harness damage or corrosion, Faulty seatbelt pretensioner squib, Loose or disconnected electrical connectors.
- 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.
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Code B1902 Scion Description
The B1902 Scion code indicates a short to ground in the front pretensioner squib right circuit. In simpler terms, this means that there is an issue with the circuit responsible for deploying the seatbelt pretensioner on the right side of the vehicle in the event of a collision. The pretensioner squib is a device that tightens the seatbelt to secure the occupant in their seat during a crash, reducing the risk of injury. A short to ground in this circuit can prevent the pretensioner from functioning properly, compromising the safety of the vehicle's occupants.
Common Causes of B1902 Scion
- Wiring harness damage or corrosion.
- Faulty seatbelt pretensioner squib.
- Loose or disconnected electrical connectors.
- Impact or collision that damaged the seatbelt pretensioner system.
- Electronic control unit (ECU) malfunction.
Symptoms of B1902 Scion
- Airbag warning light illuminated on the dashboard.
- Seatbelt pretensioner system malfunction.
- Audible warning chime indicating a safety system fault.
- Inability to pass a vehicle inspection due to safety system issues.
How to Fix B1902 Scion
- Begin by diagnosing the specific cause of the short to ground in the front pretensioner squib right circuit using a diagnostic scanner and multimeter.
- Inspect the wiring harness for any damage, corrosion, or loose connections. Repair or replace any damaged wiring as needed.
- Check the seatbelt pretensioner squib for proper function and replace it if necessary.
- Ensure all electrical connectors are securely connected and free of corrosion.
- Clear the diagnostic trouble codes from the vehicle's ECU and test the system to verify that the issue has been resolved.
Cost to Fix B1902 Scion
The cost of repairing a short to ground in the front pretensioner squib right circuit can vary depending on the specific cause of the issue and the extent of the damage. In general, the cost of parts for this repair can range from $100 to $300, while labor costs can range from $150 to $400. Overall, the total repair cost for this issue may fall between $250 and $700. It is important to note that these are rough estimates, and actual costs may vary based on factors such as location, vehicle make and model, and labor rates at the repair facility. It is recommended to obtain quotes from local auto repair shops for a more accurate cost estimate.
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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 B1902 Scion Code
1. What does OBDII code B1902 mean on a Scion?
Code B1902 indicates a "Short to Ground in Front Pretensioner Squib Right Circuit," meaning there is an electrical issue in the passenger-side seatbelt pretensioner circuit.
2. What are the symptoms of code B1902 in a Scion?
Common symptoms include the airbag warning light illuminating on the dashboard and the potential failure of the passenger-side seatbelt pretensioner during a crash.
3. What causes the B1902 code to appear?
This code is typically caused by damaged wiring, a short to ground in the pretensioner circuit, a faulty seatbelt pretensioner, or a defective airbag control module.
4. Can I still drive my vehicle with the B1902 code active?
While the vehicle may still drive normally, it is unsafe as the airbag system and seatbelt pretensioner might not function properly in an accident.
5. How do I diagnose the B1902 code in my Scion?
Diagnosis involves inspecting the wiring and connectors for damage or shorts, testing the seatbelt pretensioner resistance, and verifying the airbag control module functionality.
6. What tools are needed to repair the B1902 code?
You may need an OBDII scanner, a multimeter for electrical testing, and possibly specialized tools to access and replace the seatbelt pretensioner if necessary.
7. How much does it cost to fix code B1902 on a Scion?
Repairs could range from $50 to $400 or more, depending on whether wiring needs repair or the seatbelt pretensioner or airbag module requires replacement.
8. Can clearing the B1902 code fix the problem?
Clearing the code without addressing the underlying issue will not fix the problem; the code will likely reappear if the fault persists.
9. Is the B1902 code covered under warranty?
Depending on your Scion's age and mileage, the seatbelt system might be covered under a federally mandated safety warranty. Check with your dealer for details.
10. How do I prevent the B1902 code from reoccurring?
Regularly inspect seatbelt pretensioner wiring and connectors for wear or damage, and address any airbag system issues promptly to prevent future faults.
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