B1903 Code - Short to Positive in Front Pretensioner Squib Right Circuit
Quick Answer
The Front Pretensioner Squib Right (RH) Circuit consists of the Center Airbag Sensor Assembly and Front Seat Outer Belt Assembly Right (RH). Common causes include Faulty Front Seat Outer Belt Assembly Right (RH) (Front Pretensioner Squib Right), Front Seat Outer Belt Assembly Right harness is open or shorted, Front Seat Outer Belt Assembly Right 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
- B1903 indicates Short to Positive in Front Pretensioner Squib Right Circuit.
- Common causes
- Common causes include Faulty Front Seat Outer Belt Assembly Right (RH) (Front Pretensioner Squib Right), Front Seat Outer Belt Assembly Right harness is open or shorted, Front Seat Outer Belt Assembly Right 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 B1903 Description
What are the Possible Causes of the DTC B1903?
- Faulty Front Seat Outer Belt Assembly Right (RH) (Front Pretensioner Squib Right)
- Front Seat Outer Belt Assembly Right harness is open or shorted
- Front Seat Outer Belt Assembly Right circuit poor electrical connection
- Faulty Center Airbag Sensor Assembly
How to Fix the DTC B1903?
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 B1903 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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Information for Specific Makes
- B1903 Lexus — Short to Positive in Front Pretensioner Squib Right Circuit
- B1903 Scion — Short to Positive in Front Pretensioner Squib Right Circuit
- B1903 Toyota — Short to Positive in Front Pretensioner Squib Right 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 B1903 Code
1. What are the common symptoms of OBDII code B1903 "Short to Positive in Front Pretensioner Squib Right Circuit"?
- The common symptoms include the airbag warning light illuminating on the dashboard and potential non-deployment of the right front airbag in the event of a collision.
2. What can cause OBDII code B1903 to trigger?
- This code is typically triggered by a short circuit between the front pretensioner squib right circuit and a positive power source in the airbag system.
3. How serious is OBDII code B1903 "Short to Positive in Front Pretensioner Squib Right Circuit"?
- This code is considered serious as it indicates a fault in the right front airbag system, which may compromise occupant safety in the event of a collision.
4. Can I continue driving with OBDII code B1903 active?
- It is not recommended to drive with this code active, as it signifies a potential issue with the right front airbag system, which is a crucial safety feature.
5. How can I diagnose and repair OBDII code B1903?
- Diagnosis and repair of this code require specialized equipment and expertise. It is recommended to consult a qualified mechanic or dealership to properly diagnose and fix the issue.
6. Are there any DIY repair tips for OBDII code B1903?
- DIY repair of this code is not recommended due to the complexity and safety implications associated with airbag systems. It is best to seek professional assistance.
7. Will resetting the OBDII code B1903 resolve the issue?
- Resetting the code may temporarily turn off the warning light, but it will not fix the underlying issue causing the fault in the right front airbag system.
8. How much does it cost to repair OBDII code B1903?
- The cost of repairing this code can vary depending on the specific issue causing it. It is advisable to get a professional diagnosis to determine the exact repair cost.
9. Can a faulty seatbelt cause OBDII code B1903 to trigger?
- Yes, a faulty seatbelt or its pretensioner mechanism can sometimes cause OBDII code B1903 to trigger if it affects the right front airbag system.
10. Is it safe to attempt to fix OBDII code B1903 on my own?
- Due to the safety implications and complexity of airbag systems, it is not safe to attempt to fix OBDII code B1903 on your own. Always seek professional help for such issues.
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