AutoCodes – Nissan – P1805 2008 Nissan Sentra

P1805 2008 Nissan Sentra 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 2008 Nissan Sentra 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 4,262

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 2008 Nissan Sentra 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 2008 Nissan Sentra - Stop Lamp Switch - AutoCodes.com — P1805 2008 Nissan Sentra Code - Stop Lamp Switch

What does this mean?

What are the Possible Causes of the DTC P1805 2008 Nissan Sentra?

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 2008 Nissan Sentra?

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 2008 Nissan Sentra 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 2008 Nissan Sentra code?

Need more information on how to fix the P1805 2008 Nissan Sentra 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 2008 Nissan Sentra Code

1. What does OBDII code P1805 on a 2008 Nissan Sentra mean?

Code P1805 indicates a malfunction related to the stop lamp switch in the vehicle.

2. What are the common symptoms of a P1805 code in a 2008 Nissan Sentra?

Common symptoms include the brake lights staying on continuously, difficulty shifting gears, and the inability to start the vehicle.

3. What are the possible causes of a P1805 code in a 2008 Nissan Sentra?

Possible causes include a faulty stop lamp switch, wiring issues, a blown fuse, or a problem with the brake pedal position sensor.

4. How can I diagnose a P1805 code in my 2008 Nissan Sentra?

Diagnosing a P1805 code involves checking the stop lamp switch for proper operation, inspecting the wiring for any damage, and testing the brake pedal position sensor.

5. How can I repair a P1805 code in my 2008 Nissan Sentra?

To repair a P1805 code, you may need to replace the stop lamp switch, repair any damaged wiring, replace a blown fuse, or recalibrate the brake pedal position sensor.

6. Can a P1805 code in a 2008 Nissan Sentra cause any safety concerns?

Yes, a P1805 code can pose safety risks as it may affect the proper operation of the brake lights, potentially leading to rear-end collisions or other accidents.

7. Is it safe to continue driving with a P1805 code in my 2008 Nissan Sentra?

It is not recommended to drive with a P1805 code as it can impact the vehicle's brake light system and overall safety. It is best to address the issue promptly.

8. How much does it typically cost to repair a P1805 code in a 2008 Nissan Sentra?

The cost of repairing a P1805 code can vary depending on the exact cause of the issue, but it may range from $50 to $200 for parts and labor.

9. Can I reset the P1805 code in my 2008 Nissan Sentra without fixing the underlying issue?

While you can clear the code using an OBDII scanner, it is important to address the root cause of the problem to prevent the code from reappearing.

10. Will a P1805 code in a 2008 Nissan Sentra cause the vehicle to fail an emissions test?

A P1805 code related to the stop lamp switch is unlikely to cause the vehicle to fail an emissions test, but it should still be addressed to ensure the vehicle's proper operation.