AutoCodes – Nissan – P1805 2005 Nissan Maxima

P1805 2005 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 2005 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 4,008

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 2005 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 2005 Nissan Maxima - Stop Lamp Switch - AutoCodes.com — P1805 2005 Nissan Maxima Code - Stop Lamp Switch

What does this mean?

What are the Possible Causes of the DTC P1805 2005 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 2005 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 2005 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 2005 Nissan Maxima code?

Need more information on how to fix the P1805 2005 Nissan Maxima code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 2005 Nissan Maxima Code

1. What does OBDII code P1805 on a 2005 Nissan Maxima indicate?

The P1805 code on a 2005 Nissan Maxima typically refers to an issue with the stop lamp switch.

2. What are the common symptoms of a P1805 code in a 2005 Nissan Maxima?

Common symptoms of a P1805 code may include the brake lights not functioning properly, the inability to shift out of Park, or the cruise control not working.

3. What causes the P1805 code to trigger in a 2005 Nissan Maxima?

The P1805 code is usually triggered when there is a malfunction in the stop lamp switch, which is responsible for activating the brake lights when the brake pedal is pressed.

4. How can I diagnose the P1805 code in my 2005 Nissan Maxima?

Diagnosing the P1805 code involves checking the stop lamp switch for proper operation, inspecting the wiring for any damage, and testing the brake light circuit.

5. Can I still drive my 2005 Nissan Maxima with a P1805 code?

It is not recommended to drive your vehicle with a P1805 code, as it may affect the proper operation of the brake lights and potentially compromise your safety on the road.

6. How can I repair the P1805 code in my 2005 Nissan Maxima?

Repairing the P1805 code often involves replacing the stop lamp switch with a new one and ensuring proper adjustment and connection of the switch.

7. Are there any DIY tips for fixing the P1805 code in a 2005 Nissan Maxima?

If you have experience working on cars, you may attempt to replace the stop lamp switch yourself by following a repair manual or online guides. However, it's recommended to consult a professional if you're unsure.

8. Is the repair for a P1805 code expensive for a 2005 Nissan Maxima?

The cost of repairing a P1805 code in a 2005 Nissan Maxima can vary depending on whether you do the repair yourself or take it to a mechanic. Generally, replacing the stop lamp switch is a relatively affordable repair.

9. Will resetting the OBDII system clear the P1805 code on a 2005 Nissan Maxima?

Resetting the OBDII system may temporarily clear the P1805 code, but if the underlying issue with the stop lamp switch is not fixed, the code is likely to reappear.

10. How important is it to address the P1805 code in a 2005 Nissan Maxima?

Addressing the P1805 code promptly is crucial as it directly affects the proper functioning of your brake lights, which are essential for signaling your intentions to other drivers on the road and ensuring safe driving conditions.