AutoCodes – Infiniti – P1805 2003 Infiniti G35

P1805 2003 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 2003 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.

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Code Popularity 3,902

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
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Code P1805 2003 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 2003 Infiniti G35 - Stop Lamp Switch - AutoCodes.com — P1805 2003 Infiniti G35 Code - Stop Lamp Switch

What does this mean?

What are the Possible Causes of the DTC P1805 2003 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 2003 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 2003 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 2003 Infiniti G35 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 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.