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P1805 2004 Nissan Maxima Code - Stop Lamp Switch

Quick Answer

The P1805 code in a 2004 Nissan Maxima refers to an issue with the stop lamp switch. Common causes include Faulty stop lamp switch, Wiring issues or shorts in the brake light circuit, Corrosion or damage to the electrical connectors. 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 2004 Nissan Maxima indicates Stop Lamp Switch.
Common causes
Common causes include Faulty stop lamp switch, Wiring issues or shorts in the brake light circuit, Corrosion or damage to the electrical connectors.
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 16, 2024
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Code P1805 2004 Nissan Maxima Description

The P1805 code in a 2004 Nissan Maxima refers to an issue with the stop lamp switch. The stop lamp switch is a crucial component of the vehicle's brake system, as it is responsible for activating the brake lights when the brake pedal is pressed. When this switch malfunctions, it can lead to a variety of issues that can affect the vehicle's performance and safety.

OBDII Code P1805 2004 Nissan Maxima - Stop Lamp Switch
P1805 2004 Nissan Maxima Code - Stop Lamp Switch

Common Causes of P1805 2004 Nissan Maxima

  1. Faulty stop lamp switch.
  2. Wiring issues or shorts in the brake light circuit.
  3. Corrosion or damage to the electrical connectors.
  4. Issues with the brake pedal position sensor.
  5. Faulty brake light bulbs.

Symptoms of P1805 2004 Nissan Maxima

  1. Brake lights not illuminating when the brake pedal is pressed.
  2. Inability to engage or disengage the cruise control system.
  3. Dashboard warning light indicating a brake system issue.
  4. Difficulty shifting out of park.

How to Fix P1805 2004 Nissan Maxima

  1. Begin by locating the stop lamp switch, which is typically located near the brake pedal.
  2. Disconnect the electrical connector from the stop lamp switch.
  3. Remove the old stop lamp switch and replace it with a new one.
  4. Reconnect the electrical connector and ensure it is securely in place.
  5. Test the brake lights to confirm that they are now functioning properly.

Cost to Fix P1805 2004 Nissan Maxima

The cost of repairing a P1805 code related to the stop lamp switch in a 2004 Nissan Maxima can vary depending on the specific cause of the issue and the cost of parts and labor in your area. On average, the cost of replacing a stop lamp switch can range from $50 to $150, with additional costs for labor. It is recommended to consult with a professional mechanic to get an accurate estimate based on your specific situation. Keep in mind that labor rates at auto repair shops can vary, so it's advisable to shop around for the best deal.

What does this mean?

Tech Notes for P1805 2004 Nissan Maxima

Check to see all the brake lights are working, if they are not check the stop lamp switch. (see picture)

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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 2004 Nissan Maxima Code

1. What does OBDII code P1805 mean for a 2004 Nissan Maxima?

The OBDII code P1805 on a 2004 Nissan Maxima indicates a malfunction in the Stop Lamp Switch circuit.

2. What are the common symptoms of a P1805 code in a 2004 Nissan Maxima?

Common symptoms of a P1805 code in a 2004 Nissan Maxima may include the brake lights staying on continuously or not functioning at all, the inability to shift out of park, and the illumination of the Check Engine Light.

3. What are the possible causes of a P1805 code in a 2004 Nissan Maxima?

Possible causes of a P1805 code in a 2004 Nissan Maxima include a faulty Stop Lamp Switch, a short or open circuit in the wiring, or a malfunctioning brake light relay.

4. How can I diagnose a P1805 code in a 2004 Nissan Maxima?

To diagnose a P1805 code in a 2004 Nissan Maxima, you can start by checking the Stop Lamp Switch for proper operation, inspecting the wiring for any damage, and testing the brake light relay.

5. How can I repair a P1805 code in a 2004 Nissan Maxima?

To repair a P1805 code in a 2004 Nissan Maxima, you may need to replace the faulty Stop Lamp Switch, repair any damaged wiring, or replace the malfunctioning brake light relay.

6. Can a P1805 code in a 2004 Nissan Maxima cause any safety concerns?

Yes, a P1805 code in a 2004 Nissan Maxima can pose safety concerns as it may affect the proper functioning of the brake lights, potentially leading to a lack of visibility to other drivers when braking.

7. Is it safe to continue driving with a P1805 code in a 2004 Nissan Maxima?

It is not recommended to continue driving with a P1805 code in a 2004 Nissan Maxima, as it may compromise the safety of the vehicle. It is best to address the issue promptly.

8. How much does it cost to repair a P1805 code in a 2004 Nissan Maxima?

The cost of repairing a P1805 code in a 2004 Nissan Maxima can vary depending on the specific cause of the issue, but it may involve replacing the Stop Lamp Switch, repairing wiring, or replacing a relay, which can range from relatively inexpensive to moderately expensive.

9. Can a DIY enthusiast fix a P1805 code in a 2004 Nissan Maxima?

A DIY enthusiast with some knowledge of automotive repair may be able to fix a P1805 code in a 2004 Nissan Maxima by following repair guides and utilizing basic tools. However, if unsure, it is best to consult a professional mechanic.

10. How often does a P1805 code occur in a 2004 Nissan Maxima?

A P1805 code in a 2004 Nissan Maxima may occur infrequently, but it is essential to address it promptly to ensure the proper functioning of the brake lights and overall safety of the vehicle.

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