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Engine-Codes – Generic – B1D35

B1D35 Code - Hazard Switch

Quick Answer

The B1D35 code specifically refers to an issue with the hazard switch in the vehicle. Common causes include Faulty hazard switch mechanism, Electrical wiring issues, Corrosion or dirt buildup on the switch contacts. 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
B1D35 indicates Hazard Switch.
Common causes
Common causes include Faulty hazard switch mechanism, Electrical wiring issues, Corrosion or dirt buildup on the switch contacts.
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 B1D35 Description

The B1D35 code specifically refers to an issue with the hazard switch in the vehicle. The hazard switch, also known as the emergency flasher switch, plays a crucial role in activating the hazard lights of the vehicle. When this code is triggered, it indicates that there is a malfunction with the hazard switch, which can have implications for the overall safety and functionality of the vehicle.

OBDII Code B1D35 - Hazard Switch
B1D35 Code - Hazard Switch

Common Causes of B1D35

  1. Faulty hazard switch mechanism.
  2. Electrical wiring issues.
  3. Corrosion or dirt buildup on the switch contacts.
  4. Faulty lighting control module.
  5. Water damage to the hazard switch components.

Symptoms of B1D35

  1. Hazard lights not activating when the switch is turned on.
  2. Hazard lights flashing intermittently or erratically.
  3. Hazard lights staying on constantly without being turned off.
  4. Clicking noise heard when the hazard switch is activated.
  5. Dashboard indicator light for hazard lights not illuminating.

How to Fix B1D35

  1. Begin by disconnecting the vehicle's battery to prevent any electrical issues during the repair process.
  2. Remove the trim panel covering the hazard switch to access the switch mechanism.
  3. Inspect the hazard switch for any visible signs of damage or wear.
  4. Test the switch using a multimeter to check for continuity and proper functionality.
  5. If the hazard switch is found to be faulty, replace it with a new switch and reassemble the trim panel.

Cost to Fix B1D35

The cost of repairing a hazard switch can vary depending on the make and model of the vehicle, as well as the labor rates in your area. On average, the cost of a new hazard switch can range from $50 to $150, with additional labor costs of around $100 to $200. It is advisable to contact local auto repair shops for a more accurate estimate based on your specific vehicle and location.

What does this mean?

Tech Notes for B1D35

B1D35:11 Hazard Switch Circuit Short to Ground
B1D35:23 Hazard Switch Signal Stuck Low

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Code B1D35 Information for Specific Makes

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 B1D35 Code

1. What does OBDII code B1D35 mean?

Code B1D35 refers to a malfunction in the hazard switch circuit, which is responsible for activating the vehicle's hazard warning lights.

2. What are the common symptoms of code B1D35?

Symptoms include hazard lights not turning on, hazard lights staying on continuously, or the hazard switch feeling stuck or unresponsive.

3. What causes the B1D35 code to appear?

Common causes include a faulty hazard switch, wiring issues such as shorts or open circuits, or a malfunction in the body control module (BCM).

4. Can I still drive with the B1D35 code?

Yes, but without functioning hazard lights, your ability to signal an emergency situation is compromised, which could be dangerous in certain conditions.

5. How do I diagnose the B1D35 code?

Start by inspecting the hazard switch and its wiring for visible damage. Use a multimeter to check for proper voltage and continuity in the circuit. A scan tool can also help confirm the code and pinpoint the fault.

6. How is the B1D35 code fixed?

Repairs may involve replacing the hazard switch, repairing damaged wiring, or reprogramming or replacing the body control module if necessary.

7. How much does it cost to fix the B1D35 code?

Repair costs can vary, but replacing a hazard switch typically costs $50-$150 for parts and labor. Wiring repairs or BCM replacements may cost more.

8. Can a blown fuse cause the B1D35 code?

Yes, a blown fuse in the hazard light circuit can disrupt functionality and trigger the B1D35 code.

9. Do I need a professional mechanic to fix the B1D35 code?

While some issues like replacing a hazard switch can be done by a DIYer, more complex electrical diagnostics or BCM repairs may require a professional.

10. Will clearing the B1D35 code with a scan tool fix the problem?

Clearing the code may temporarily remove it from the system, but if the underlying issue isn’t resolved, the code will likely reappear.

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