AutoCodes – Infiniti – P1805 2005 Infiniti G35

P1805 2005 Infiniti G35 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 Infiniti G35 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 2,237

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
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P1805 2005 Infiniti G35 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 Infiniti G35 - Stop Lamp Switch - AutoCodes.com — P1805 2005 Infiniti G35 Code - Stop Lamp Switch

What does this mean?

What are the Possible Causes of the DTC P1805 2005 Infiniti G35?

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 Infiniti G35?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1805 2005 Infiniti G35 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 Infiniti G35 code?

Need more information on how to fix the P1805 2005 Infiniti G35 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1805 2005 Infiniti G35 code diagnosed by a professional: Find a repair shop in your area

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 Infiniti G35 Code

1. What are the common symptoms of OBDII code P1805 in a 2005 Infiniti G35 related to the Stop Lamp Switch?

The common symptoms include the brake lights staying on continuously, the brake lights not working at all, and the inability to shift out of Park.

2. What are the possible causes of OBDII code P1805 in a 2005 Infiniti G35 related to the Stop Lamp Switch?

The most common causes are a faulty stop lamp switch, a misadjusted stop lamp switch, or wiring issues in the stop lamp switch circuit.

3. How can I diagnose the OBDII code P1805 in a 2005 Infiniti G35 related to the Stop Lamp Switch?

You can diagnose the issue by checking the stop lamp switch for proper operation, inspecting the wiring for any damage, and using an OBDII scanner to read and clear the code.

4. How can I repair OBDII code P1805 in a 2005 Infiniti G35 related to the Stop Lamp Switch?

To repair the issue, you may need to replace the faulty stop lamp switch, adjust the stop lamp switch properly, or repair any damaged wiring in the circuit.

5. Can I drive my 2005 Infiniti G35 with OBDII code P1805 related to the Stop Lamp Switch?

It is not recommended to drive the vehicle with this issue as it can affect the proper operation of the brake lights and potentially compromise safety on the road.

6. How much does it cost to repair OBDII code P1805 in a 2005 Infiniti G35 related to the Stop Lamp Switch?

The cost of repairing this issue can vary depending on the root cause of the problem, but it typically ranges from $50 to $200 for parts and labor.

7. Will resetting the OBDII code P1805 in a 2005 Infiniti G35 related to the Stop Lamp Switch fix the problem?

Resetting the code may temporarily turn off the warning light, but it will not fix the underlying issue causing the code to reappear. It is important to diagnose and repair the root cause.

8. How do I prevent OBDII code P1805 in a 2005 Infiniti G35 related to the Stop Lamp Switch from occurring again?

Regularly checking the stop lamp switch for proper operation, adjusting it as needed, and ensuring the wiring is in good condition can help prevent the issue from occurring again.

9. Can a DIY enthusiast repair OBDII code P1805 in a 2005 Infiniti G35 related to the Stop Lamp Switch?

If you have the necessary tools, knowledge, and experience, you may be able to repair this issue yourself by following the manufacturer's repair procedures and safety precautions.

10. Is OBDII code P1805 in a 2005 Infiniti G35 related to the Stop Lamp Switch a common issue?

While not extremely common, issues with the stop lamp switch causing this OBDII code can occur in some 2005 Infiniti G35 vehicles and should be addressed promptly to ensure safe driving conditions.