B1835 Code - Short in Curtain Shield Squib Left Circuit
Quick Answer
The Curtain Shield Squib Left (LH) Circuit consists of the Center Airbag Sensor Assembly and the Curtain Shield Airbag Assembly Left (LH). Common causes include Faulty Curtain Shield Airbag Assembly Left (LH) (Curtain Shield Squib Left), Curtain Shield Airbag Assembly Left harness is open or shorted, Curtain Shield Airbag Assembly 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
- B1835 indicates Short in Curtain Shield Squib Left Circuit.
- Common causes
- Common causes include Faulty Curtain Shield Airbag Assembly Left (LH) (Curtain Shield Squib Left), Curtain Shield Airbag Assembly Left harness is open or shorted, Curtain Shield Airbag Assembly 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 B1835 Description
What are the Possible Causes of the DTC B1835?
- Faulty Curtain Shield Airbag Assembly Left (LH) (Curtain Shield Squib Left)
- Curtain Shield Airbag Assembly Left harness is open or shorted
- Curtain Shield Airbag Assembly Left circuit poor electrical connection
- Faulty Center Airbag Sensor Assembly
How to Fix the DTC B1835?
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 B1835 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
- B1835 Buick — Driver Seat Lumbar Rearward Switch Circuit
- B1835 Cadillac — Driver Seat Lumbar Rearward Switch Circuit
- B1835 Chevrolet — Driver Seat Lumbar Rearward Switch Circuit
- B1835 GMC — Driver Seat Lumbar Rearward Switch Circuit
- B1835 Lexus — Short in Curtain Shield Squib Left Circuit
- B1835 Scion — Short in Curtain Shield Squib Left Circuit
- B1835 Toyota — Short in Curtain Shield Squib Left 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 B1835 Code
1. What does the OBDII code B1835 mean?
The code B1835 indicates a short circuit in the curtain shield squib (airbag) circuit on the left side of the vehicle.
2. What are the common symptoms of code B1835?
Symptoms include the airbag warning light illuminating, possible deactivation of the airbag system, and no deployment of the left curtain airbag in an accident.
3. What causes the B1835 code to appear?
Causes may include damaged wiring, a short to ground or power in the airbag circuit, a faulty curtain shield airbag, or a malfunctioning airbag control module.
4. Is it safe to drive with code B1835?
No, driving with this code can be unsafe as the left curtain airbag may not deploy in the event of a collision.
5. How do I diagnose the B1835 code?
Diagnosis involves checking the airbag circuit for shorts, inspecting the wiring and connectors, and testing the curtain shield squib component for faults.
6. Can I clear the B1835 code without fixing the problem?
You can clear the code temporarily, but it will return if the underlying issue is not resolved.
7. What tools are needed to repair code B1835?
Tools include an OBDII scanner, a multimeter for testing continuity, and possibly a wiring diagram for the airbag system.
8. How much does it cost to fix code B1835?
Repair costs vary depending on the issue, ranging from a simple wiring repair (low cost) to replacing the airbag or control module (higher cost).
9. Can a faulty sensor cause the B1835 code?
While rare, a faulty impact sensor connected to the circuit may contribute to triggering this code.
10. Should I attempt to repair code B1835 myself?
Due to the complexity and safety risks of the airbag system, it's recommended to have a professional technician address this issue.
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