B1920 Toyota Code - Short In Rear Pretensioner Squib RH Circuit
Quick Answer
The B1920 diagnostic trouble code for Toyota vehicles indicates a short in the rear pretensioner squib RH circuit. Common causes include Damaged wiring or connectors in the rear pretensioner squib circuit, Faulty pretensioner squib in the right rear seatbelt assembly, Loose or corroded connections in the circuit. 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
- B1920 Toyota indicates Short In Rear Pretensioner Squib RH Circuit.
- Common causes
- Common causes include Damaged wiring or connectors in the rear pretensioner squib circuit, Faulty pretensioner squib in the right rear seatbelt assembly, Loose or corroded connections in the circuit.
- 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 B1920 Toyota Description
The B1920 diagnostic trouble code for Toyota vehicles indicates a short in the rear pretensioner squib RH circuit. In simpler terms, this means that there is an issue with the wiring or components related to the right rear seatbelt pretensioner system. The pretensioner squib is a device that activates during a collision to tighten the seatbelt and restrain the occupant, providing additional safety. A short in this circuit can prevent the pretensioner from functioning properly, potentially compromising the effectiveness of the seatbelt system in the event of an accident.
Common Causes of B1920 Toyota
- Damaged wiring or connectors in the rear pretensioner squib circuit.
- Faulty pretensioner squib in the right rear seatbelt assembly.
- Loose or corroded connections in the circuit.
- Malfunctioning airbag control module.
Symptoms of B1920 Toyota
- Airbag warning light illuminated on the dashboard.
- Right rear seatbelt pretensioner not functioning properly.
- Audible warning chime indicating a seatbelt or airbag system issue.
- Diagnostic trouble code B1920 stored in the vehicle's computer system.
How to Fix B1920 Toyota
- Begin by diagnosing the specific cause of the short in the rear pretensioner squib RH circuit using a diagnostic scanner.
- Inspect the wiring harness and connectors for any damage or corrosion. Repair or replace as necessary.
- Test the pretensioner squib in the right rear seatbelt assembly to determine if it is faulty. Replace if needed.
- Check and tighten any loose connections in the circuit.
- Clear the diagnostic trouble code from the vehicle's computer system and perform a test drive to ensure the issue has been resolved.
Cost to Fix B1920 Toyota
The typical repair costs for addressing a short in the rear pretensioner squib RH circuit can vary depending on the specific cause of the issue and the cost of parts and labor. In general, the cost of parts for this repair could range from $100 to $300, while labor costs could range from $150 to $300. Overall, the total repair cost could fall between $250 and $600. 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 the specific repair shop. It is advisable to consult with a qualified mechanic or repair shop to obtain a more accurate cost estimate for addressing this issue.
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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 B1920 Toyota Code
1. What are the common symptoms of OBDII code B1920 in a Toyota related to a Short In Rear Pretensioner Squib RH Circuit?
The common symptoms include an illuminated airbag warning light on the dashboard and potential issues with the vehicle's airbag system.
2. What causes the OBDII code B1920 to appear in a Toyota indicating a Short In Rear Pretensioner Squib RH Circuit?
The code B1920 typically appears due to a wiring fault or a short circuit in the rear pretensioner squib RH circuit of the airbag system.
3. How can I diagnose the OBDII code B1920 in my Toyota indicating a Short In Rear Pretensioner Squib RH Circuit?
Diagnosing this code usually involves inspecting the wiring harness, connectors, and components related to the rear pretensioner squib RH circuit for any visible damage or issues.
4. Is it safe to drive my Toyota with the OBDII code B1920 related to a Short In Rear Pretensioner Squib RH Circuit?
It is not recommended to drive the vehicle with this code present, as it may indicate a potential safety risk with the airbag system not functioning properly.
5. How can I repair the OBDII code B1920 in my Toyota indicating a Short In Rear Pretensioner Squib RH Circuit?
Repairing this code typically involves fixing the wiring fault or short circuit in the rear pretensioner squib RH circuit, which may require professional assistance.
6. Can I reset the OBDII code B1920 in my Toyota related to a Short In Rear Pretensioner Squib RH Circuit myself?
While you may be able to clear the code with an OBDII scanner, it is crucial to address the underlying issue causing the fault to ensure the safety of the airbag system.
7. Are there any common DIY tips for troubleshooting the OBDII code B1920 in a Toyota indicating a Short In Rear Pretensioner Squib RH Circuit?
DIY tips may include visually inspecting the wiring and connectors for any visible damage, checking for loose connections, and ensuring proper grounding of the components.
8. How can a professional mechanic help me with the OBDII code B1920 in my Toyota related to a Short In Rear Pretensioner Squib RH Circuit?
A professional mechanic can conduct a thorough diagnosis using specialized tools, repair the wiring fault or short circuit, and ensure the airbag system is functioning correctly.
9. What are the potential risks of ignoring the OBDII code B1920 indicating a Short In Rear Pretensioner Squib RH Circuit in my Toyota?
Ignoring this code may result in the airbag system not deploying properly in the event of a collision, potentially compromising the safety of the vehicle occupants.
10. Is it necessary to replace any components when dealing with the OBDII code B1920 related to a Short In Rear Pretensioner Squib RH Circuit in a Toyota?
In some cases, damaged wiring or components may need to be replaced to resolve the issue and ensure the proper functioning of the airbag system.
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