Engine-CodesInfiniti – P1805 2003 Infiniti G35

P1805 2003 Infiniti G35 Code - Stop Lamp Switch

Quick Answer

The P1805 diagnostic trouble code (DTC) in a 2003 Infiniti G35 indicates a problem with the stop lamp switch. Common causes include Faulty stop lamp switch, Electrical wiring issues, Loose or corroded 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
P1805 2003 Infiniti G35 indicates Stop Lamp Switch.
Common causes
Common causes include Faulty stop lamp switch, Electrical wiring issues, Loose or corroded 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.
Table of contents Created and updated by William Orellana on Sep 14, 2024
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Code P1805 2003 Infiniti G35 Description

The P1805 diagnostic trouble code (DTC) in a 2003 Infiniti G35 indicates a problem with the stop lamp switch. The stop lamp switch is a crucial component of the vehicle's brake system, responsible for activating the brake lights when the brake pedal is pressed. When this switch malfunctions, it can lead to various issues affecting the vehicle's performance and safety.

OBDII Code P1805 2003 Infiniti G35 - Stop Lamp Switch
P1805 2003 Infiniti G35 Code - Stop Lamp Switch

Common Causes of P1805 2003 Infiniti G35

  1. Faulty stop lamp switch
  2. Electrical wiring issues
  3. Loose or corroded connections
  4. Defective brake pedal position sensor
  5. Software glitches in the vehicle's onboard computer

Symptoms of P1805 2003 Infiniti G35

  1. Check engine light illuminated on the dashboard
  2. Brake lights not functioning properly
  3. Difficulty engaging cruise control
  4. Transmission shifting issues
  5. ABS or traction control system malfunctions

How to Fix P1805 2003 Infiniti G35

  1. Begin by locating the stop lamp switch, typically mounted near the brake pedal.
  2. Disconnect the electrical connector from the switch and remove any mounting hardware.
  3. Install a new stop lamp switch and secure it in place.
  4. Reconnect the electrical connector and ensure proper alignment.
  5. Clear the DTC with a diagnostic scanner and test the brake lights to confirm proper operation.

Cost to Fix P1805 2003 Infiniti G35

The cost of repairing a P1805 code related to the stop lamp switch in a 2003 Infiniti G35 can vary depending on the specific components needed and labor rates in your area. On average, the parts for this repair may range from $20 to $50, while labor costs can add an additional $80 to $150 per hour. It's recommended to contact local auto repair shops for a more accurate estimate based on your location and vehicle specifics.

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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 P1805 2003 Infiniti G35 Code

1. What does OBDII code P1805 on a 2003 Infiniti G35 indicate?

The OBDII code P1805 on a 2003 Infiniti G35 specifically refers to an issue with the Stop Lamp Switch.

2. What are the common symptoms of a P1805 code on a 2003 Infiniti G35?

Common symptoms of a P1805 code on a 2003 Infiniti G35 include the brake lights not working properly, the cruise control not engaging, and the gear shifter being stuck in Park.

3. What are the possible causes of the P1805 code on a 2003 Infiniti G35?

Common causes of the P1805 code on a 2003 Infiniti G35 include a faulty stop lamp switch, a wiring issue in the brake light circuit, or a problem with the brake light fuse.

4. How can I diagnose a P1805 code on a 2003 Infiniti G35?

To diagnose a P1805 code on a 2003 Infiniti G35, you can start by checking the stop lamp switch for proper operation, inspecting the brake light circuit for any damaged wiring, and testing the brake light fuse for continuity.

5. Can I still drive my 2003 Infiniti G35 with a P1805 code?

It is not recommended to drive your 2003 Infiniti G35 with a P1805 code, as it can affect the proper functioning of your brake lights and other critical safety systems.

6. How do I repair a P1805 code on a 2003 Infiniti G35?

To repair a P1805 code on a 2003 Infiniti G35, you may need to replace the stop lamp switch, repair any damaged wiring in the brake light circuit, or replace a blown brake light fuse.

7. Is the repair for a P1805 code on a 2003 Infiniti G35 something I can do myself?

If you have experience working on automotive electrical systems, you may be able to repair a P1805 code on a 2003 Infiniti G35 yourself. However, if you are unsure, it is best to consult a professional mechanic.

8. Will resetting the OBDII code P1805 on a 2003 Infiniti G35 make it go away?

Resetting the OBDII code P1805 on a 2003 Infiniti G35 may temporarily clear the code, but if the underlying issue with the stop lamp switch is not addressed, the code is likely to return.

9. What is the importance of fixing a P1805 code on a 2003 Infiniti G35 promptly?

Fixing a P1805 code on a 2003 Infiniti G35 promptly is crucial as it ensures that your brake lights function correctly, which is essential for your safety and the safety of other drivers on the road.

10. Can a P1805 code on a 2003 Infiniti G35 affect other systems in the vehicle?

Yes, a P1805 code on a 2003 Infiniti G35 can potentially affect other systems in the vehicle, such as the cruise control system and the transmission's ability to shift out of Park.

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