AutoCodes – Nissan – P0850 2008 Nissan Sentra

P0850 2008 Nissan Sentra Code - Park/Neutral Switch

Quick Answer

When the shift position is P or N, Park/Neutral Position (PNP) switch is turned ON. Common causes include Misadjusted Park/Neutral Switch, Faulty Park/Neutral Switch, Park/Neutral Switch harness is open or shorted. 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: P0850 2008 Nissan Sentra indicates Park/Neutral Switch.
Common causes: Common causes include Misadjusted Park/Neutral Switch, Faulty Park/Neutral Switch, Park/Neutral Switch harness is open or shorted.
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 5,716

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 May 10, 2019

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 P0850 2008 Nissan Sentra Description

When the shift position is P or N, Park/Neutral Position (PNP) switch is turned ON. The Engine Control Module (ECM) detects the position because the continuity of the line (the ON signal) exists.
The Park/Neutral Position (PNP) switch assembly also indicates a transmission range switch to detect shift lever position.

OBDII Code P0850 2008 Nissan Sentra - Park/Neutral Switch - AutoCodes.com — P0850 2008 Nissan Sentra Code - Park/Neutral Switch

What does this mean?

What are the Possible Causes of the DTC P0850 2008 Nissan Sentra?

Misadjusted Park/Neutral Switch
Faulty Park/Neutral Switch
Park/Neutral Switch harness is open or shorted
Park/Neutral Switch circuit poor electrical connection

How to Fix the DTC P0850 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0850 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 P0850 2008 Nissan Sentra code?

Need more information on how to fix the P0850 2008 Nissan Sentra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0850 2008 Nissan Sentra 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 P0850 2008 Nissan Sentra Code

What does the OBDII code P0850 mean for a 2008 Nissan Sentra?

The P0850 code indicates a malfunction in the Park/Neutral Position (PNP) switch, which detects whether the transmission is in park or neutral.

What are the common symptoms of a P0850 code?

Common symptoms include the inability to start the engine, the check engine light being illuminated, and potential issues with the transmission shifting.

What could cause a P0850 code in a 2008 Nissan Sentra?

Causes may include a faulty Park/Neutral switch, wiring issues, poor connections, or problems with the transmission control module.

How can I diagnose a P0850 code?

Start by inspecting the Park/Neutral switch and its wiring for damage or corrosion. Use a multimeter to test the switch's functionality and check for any loose connections.

What should I do if I have a P0850 code?

If you have a P0850 code, first inspect the Park/Neutral switch and wiring. If they appear fine, consider using a scan tool to reset the code and see if it recurs. If it does, further diagnosis may be needed.

Can a bad battery cause a P0850 code?

Yes, a weak or failing battery can cause electrical issues that may trigger a P0850 code, so ensure the battery and charging system are functioning properly.

Is it safe to drive with a P0850 code?

It may not be safe to drive with a P0850 code, as it can affect the vehicle's ability to start or shift gears properly, leading to potential hazards.

What are the repair options for a P0850 code?

Repair options include replacing the faulty Park/Neutral switch, repairing damaged wiring, or addressing issues with the transmission control module.

How much does it typically cost to fix a P0850 code?

Repair costs can vary widely based on the cause; replacing the Park/Neutral switch may cost between $100 to $300, while more extensive wiring repairs could be higher.