AutoCodes – Nissan – P1805 2012 Nissan Sentra

P1805 2012 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 2012 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 6,007

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 2012 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 2012 Nissan Sentra - Stop Lamp Switch - AutoCodes.com — P1805 2012 Nissan Sentra Code - Stop Lamp Switch

What does this mean?

What are the Possible Causes of the DTC P1805 2012 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 2012 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 2012 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 2012 Nissan Sentra code?

Need more information on how to fix the P1805 2012 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 2012 Nissan Sentra Code

1. What does the OBDII code P1805 mean on a 2012 Nissan Sentra?

P1805 indicates a problem with the Stop Lamp Switch, which is responsible for detecting when the brake pedal is pressed.

2. What are the symptoms of code P1805 in a 2012 Nissan Sentra?

Common symptoms include brake lights not working, the cruise control not engaging, difficulty shifting out of park, or the check engine light illuminating.

3. What causes the P1805 code to appear?

This code is usually triggered by a faulty stop lamp switch, misadjusted switch, damaged wiring, or a blown fuse related to the brake light circuit.

4. Can a faulty stop lamp switch affect vehicle performance?

Yes, it can prevent the brake lights from working, affect cruise control operation, or cause shifting issues with the transmission.

5. How do I diagnose the P1805 code on a 2012 Nissan Sentra?

Inspect the stop lamp switch for physical damage, check the wiring and connectors for corrosion or fraying, and test the switch functionality with a multimeter.

6. Can I drive with the P1805 code active?

It is not recommended to drive with this code active, as it may result in safety issues like non-functional brake lights or transmission problems.

7. How is the P1805 code fixed on a 2012 Nissan Sentra?

The most common repair is replacing the stop lamp switch, but you may also need to repair or replace damaged wiring or fuses.

8. How much does it cost to fix the P1805 code?

Replacing the stop lamp switch typically costs between $50 and $150, including parts and labor, though prices may vary by location and shop.

9. Can a blown fuse trigger the P1805 code?

Yes, a blown fuse in the brake light circuit can cause the stop lamp switch to malfunction and trigger the code.

10. How can I prevent the P1805 code from reoccurring?

Regularly inspect and maintain the brake light system, ensure the stop lamp switch is properly adjusted, and promptly address any electrical issues in the circuit.