AutoCodes – Nissan – P1805 2004 Nissan Maxima

P1805 2004 Nissan Maxima Code - Stop Lamp Switch

Quick Answer

The brake switch signal is applied to the Engine Control Module (ECM) through the stop lamp switch when the brake pedal is depressed. Common causes include Faulty Stop Lamp Switch, Stop Lamp Switch harness is open or shorted, Stop Lamp Switch 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: P1805 2004 Nissan Maxima indicates Stop Lamp Switch.
Common causes: Common causes include Faulty Stop Lamp Switch, Stop Lamp Switch harness is open or shorted, Stop Lamp Switch 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.

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Code Popularity 4,183

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 05, 2022

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P1805 2004 Nissan Maxima Description

The brake switch signal is applied to the Engine Control Module (ECM) through the stop lamp switch when the brake pedal is depressed. This signal is used mainly to decrease the engine speed when the vehicle is driving. The Diagnostic Trouble Code (DTC) will be set when the ECM detects a faulty Stop Lamp Switch.

OBDII Code P1805 2004 Nissan Maxima - Stop Lamp Switch - AutoCodes.com — P1805 2004 Nissan Maxima Code - Stop Lamp Switch

What does this mean?

What are the Possible Causes of the DTC P1805 2004 Nissan Maxima?

Faulty Stop Lamp Switch
Stop Lamp Switch harness is open or shorted
Stop Lamp Switch circuit poor electrical connection

How to Fix the DTC P1805 2004 Nissan Maxima?

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 does this mean?

Code Tech Notes

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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1805 2004 Nissan Maxima 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.

Need more information about the P1805 2004 Nissan Maxima code?

Need more information on how to fix the P1805 2004 Nissan Maxima code? Get Access to Factory Service Manuals

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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.