AutoCodes – Nissan – P0850 2009 Nissan Sentra

P0850 2009 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 2009 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.

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Code Popularity 4,763

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
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Code P0850 2009 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 2009 Nissan Sentra - Park/Neutral Switch - AutoCodes.com — P0850 2009 Nissan Sentra Code - Park/Neutral Switch

What does this mean?

What are the Possible Causes of the DTC P0850 2009 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 2009 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 2009 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 2009 Nissan Sentra code?

Need more information on how to fix the P0850 2009 Nissan Sentra code? Get Access to Factory Service Manuals

Need Help with the 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 P0850 2009 Nissan Sentra Code

1. What does the OBDII code P0850 for a 2009 Nissan Sentra mean?

The OBDII code P0850 for a 2009 Nissan Sentra refers to an issue with the Park/Neutral Switch circuit.

2. What are some common symptoms of a P0850 trouble code?

Common symptoms of a P0850 trouble code include difficulty starting the vehicle, the engine not cranking, or the vehicle not shifting out of Park.

3. What can cause the P0850 code to trigger in a 2009 Nissan Sentra?

The P0850 code in a 2009 Nissan Sentra is typically triggered by a faulty Park/Neutral Switch, a misadjusted switch, or damaged wiring/connectors related to the switch.

4. How can I diagnose the cause of a P0850 trouble code in my 2009 Nissan Sentra?

To diagnose a P0850 trouble code, you can use a scan tool to check for the code, inspect the Park/Neutral Switch for any physical damage, and test the switch's electrical connections for proper functioning.

5. Can driving with a P0850 trouble code cause further damage to my 2009 Nissan Sentra?

Continuing to drive with a P0850 trouble code may lead to issues with starting the vehicle or shifting gears, but it is unlikely to cause significant damage to the vehicle.

6. How can I repair a P0850 code on my 2009 Nissan Sentra?

To repair a P0850 code on a 2009 Nissan Sentra, you may need to replace the Park/Neutral Switch if it is faulty, adjust the switch if misaligned, or repair any damaged wiring or connectors.

7. Are there any DIY tips for fixing a P0850 trouble code in a 2009 Nissan Sentra?

DIY tips for fixing a P0850 trouble code include checking the switch's alignment, inspecting wiring for damage, and ensuring proper electrical connections before considering switch replacement.

8. Will resetting the OBDII system clear a P0850 trouble code on a 2009 Nissan Sentra?

Resetting the OBDII system may temporarily clear the P0850 trouble code, but it is essential to diagnose and address the underlying issue causing the code to prevent it from reoccurring.

9. How much does it cost to repair a P0850 trouble code on a 2009 Nissan Sentra?

The cost to repair a P0850 trouble code on a 2009 Nissan Sentra can vary depending on the cause of the issue, but it may range from $100 to $300 for parts and labor.

10. Can a P0850 code affect the transmission performance of a 2009 Nissan Sentra?

Yes, a P0850 code can affect the transmission performance of a 2009 Nissan Sentra by causing issues with shifting gears or preventing the vehicle from moving out of Park.