AutoCodes – Nissan – P1805 2003 Nissan Altima Sedan

P1805 2003 Nissan Altima Sedan 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 Nissan Altima Sedan 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 3,372

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 Nissan Altima Sedan 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 Nissan Altima Sedan - Stop Lamp Switch - AutoCodes.com — P1805 2003 Nissan Altima Sedan Code - Stop Lamp Switch

What does this mean?

What are the Possible Causes of the DTC P1805 2003 Nissan Altima Sedan?

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 Nissan Altima Sedan?

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 Nissan Altima Sedan 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 Nissan Altima Sedan 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 Nissan Altima Sedan Code

1. What are the common symptoms of OBDII code P1805 in a 2003 Nissan Altima Sedan related to the Stop Lamp Switch?

- The common symptoms include the brake lights staying on continuously, difficulty shifting out of park, and the cruise control not working.

2. What is the main cause of OBDII code P1805 in a 2003 Nissan Altima Sedan?

- The main cause of this code is a malfunctioning or misadjusted stop lamp switch.

3. How can I diagnose the issue with the stop lamp switch causing OBDII code P1805 in my 2003 Nissan Altima Sedan?

- You can start by checking the physical condition of the stop lamp switch, ensuring it is properly connected and adjusted. Using an OBDII scanner to read the trouble code can also help diagnose the issue.

4. Can I still drive my 2003 Nissan Altima Sedan with OBDII code P1805 related to the Stop Lamp Switch?

- It is not recommended to drive the vehicle with this issue, as the malfunctioning stop lamp switch can affect critical safety features like the brake lights and transmission shifting.

5. How can I repair OBDII code P1805 related to the Stop Lamp Switch in my 2003 Nissan Altima Sedan?

- The repair typically involves replacing the stop lamp switch with a new one that meets the manufacturer's specifications.

6. Are there any DIY tips for fixing OBDII code P1805 in a 2003 Nissan Altima Sedan?

- While it is possible to replace the stop lamp switch yourself, it is recommended to consult the vehicle's service manual or seek professional help to ensure proper installation and adjustment.

7. What are the consequences of ignoring OBDII code P1805 in a 2003 Nissan Altima Sedan related to the Stop Lamp Switch?

- Ignoring this code can lead to safety hazards on the road, such as the brake lights not functioning correctly, which can increase the risk of accidents.

8. Is the repair for OBDII code P1805 related to the Stop Lamp Switch covered under warranty for a 2003 Nissan Altima Sedan?

- The warranty coverage depends on the specific terms and conditions of your vehicle's warranty. It's recommended to check with the dealership or manufacturer for more information.

9. Can a faulty stop lamp switch causing OBDII code P1805 affect other systems in a 2003 Nissan Altima Sedan?

- Yes, a malfunctioning stop lamp switch can potentially affect other vehicle systems like the transmission control module and cruise control due to its role in signaling brake pedal input.

10. How long does it typically take to replace the stop lamp switch to fix OBDII code P1805 in a 2003 Nissan Altima Sedan?

- The repair process usually takes around 30 minutes to an hour, depending on the accessibility of the switch and the experience level of the person performing the replacement.