AutoCodes – Nissan – P0850 2007 Nissan Maxima

P0850 2007 Nissan Maxima 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 2007 Nissan Maxima 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 3,481

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 2007 Nissan Maxima 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 2007 Nissan Maxima - Park/Neutral Switch - AutoCodes.com — P0850 2007 Nissan Maxima Code - Park/Neutral Switch

What does this mean?

What are the Possible Causes of the DTC P0850 2007 Nissan Maxima?

Misadjusted Park/Neutral Switch
Faulty Park/Neutral Switch
Park/Neutral Switch harness is open or shorted
Park/Neutral Switch circuit poor electrical connection
Unified meter and A/C amp.
TCM

How to Fix the DTC P0850 2007 Nissan Maxima?

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 2007 Nissan Maxima 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 2007 Nissan Maxima code?

Need more information on how to fix the P0850 2007 Nissan Maxima 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 2007 Nissan Maxima Code

1. What does OBDII code P0850 mean on a 2007 Nissan Maxima?

This code indicates a problem with the Park/Neutral Position (PNP) switch, also known as the Transmission Range Sensor or Inhibitor Switch.

2. What are the common symptoms of a P0850 code on a Nissan Maxima?

Common symptoms include difficulty starting the vehicle, the engine not cranking, the inability to shift gears, and the Check Engine Light being illuminated.

3. What causes the P0850 code to appear on a 2007 Nissan Maxima?

The P0850 code is typically triggered by a faulty Park/Neutral switch, damaged wiring or connectors, or issues with the transmission control module.

4. How do I diagnose the P0850 code on my 2007 Nissan Maxima?

Diagnosing the P0850 code involves checking the Park/Neutral switch for proper operation, inspecting the wiring and connectors for damage, and scanning the vehicle's computer for related trouble codes.

5. Can I drive my Nissan Maxima with a P0850 code?

It's not recommended to drive your vehicle with a P0850 code present, as it can lead to safety issues and potential transmission damage. It's best to address the issue promptly.

6. How do I repair a P0850 code on my 2007 Nissan Maxima?

Repairing a P0850 code may involve replacing the Park/Neutral switch, repairing damaged wiring or connectors, or reprogramming the transmission control module.

7. Is it possible to reset the P0850 code without fixing the underlying issue?

While clearing the trouble code can temporarily turn off the Check Engine Light, the issue causing the code will persist unless properly diagnosed and repaired.

8. Are there any DIY tips for fixing a P0850 code on a Nissan Maxima?

DIY tips include checking and cleaning the connectors, inspecting the wiring for damage, and consulting the vehicle's service manual for specific troubleshooting steps.

9. How much does it cost to repair a P0850 code on a 2007 Nissan Maxima?

The cost of repairing a P0850 code can vary depending on the underlying issue, parts needed, and labor costs. It's recommended to get a professional diagnosis for an accurate estimate.

10. Can a P0850 code on a 2007 Nissan Maxima cause other problems if left unaddressed?

Yes, ignoring a P0850 code can lead to further transmission issues, potential safety hazards, and increased repair costs in the long run. It's best to address the problem promptly.