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Engine-Codes – Generic – B1835

B1835 Code - Short in Curtain Shield Squib Left Circuit

Quick Answer

The B1835 diagnostic trouble code indicates a short in the curtain shield squib left circuit. Common causes include Faulty curtain airbag squib (inflator), Short circuit in the wiring harness, Loose or corroded electrical connections. 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 airbag squib (inflator), Short circuit in the wiring harness, Loose or corroded electrical connections.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 07, 2024
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Code B1835 Description

The B1835 diagnostic trouble code indicates a short in the curtain shield squib left circuit. In simpler terms, this code suggests that there is an issue with the curtain airbag system on the driver's side of the vehicle. The curtain airbag, also known as the side airbag or side-curtain airbag, is designed to deploy from the roof or upper part of the vehicle to protect occupants in the event of a side-impact collision or rollover.

OBDII Code B1835 - Short in Curtain Shield Squib Left Circuit
B1835 Code - Short in Curtain Shield Squib Left Circuit

Common Causes of B1835

  1. Faulty curtain airbag squib (inflator)
  2. Short circuit in the wiring harness
  3. Loose or corroded electrical connections
  4. Impact damage to the vehicle triggering the code
  5. Manufacturing defect in the airbag system components

Symptoms of B1835

  1. Airbag warning light illuminated on the dashboard
  2. Inability to deploy the curtain airbag in a crash
  3. Erratic or unintended airbag deployment
  4. Loss of communication with the airbag system
  5. Vehicle may fail a safety inspection or certification

How to Fix B1835

  1. Diagnose the issue using a diagnostic scanner to pinpoint the exact location of the short in the curtain shield squib left circuit.
  2. Inspect the wiring harness and electrical connections for any visible damage, corrosion, or loose connections.
  3. Test the curtain airbag squib (inflator) to determine if it is functioning properly.
  4. Replace any damaged wiring, connectors, or the curtain airbag squib as necessary.
  5. Clear the diagnostic trouble code from the vehicle's computer and test the airbag system to ensure proper functionality.

Cost to Fix B1835

The cost of repairing a short in the curtain shield squib left circuit can vary depending on the extent of the damage, the specific components that need to be replaced, and the labor rates at the auto repair shop. In general, the cost of parts for this repair can range from $200 to $500, while the labor cost can be anywhere from $100 to $300. Overall, the total cost of addressing this issue is likely to fall in the range of $300 to $800. It's important to note that these are rough estimates, and actual costs may differ based on the factors mentioned earlier.

Need more information about the B1835 code?

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Code B1835 Information for Specific Makes

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.

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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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