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P0850 2007 Nissan Maxima Code - Park/Neutral Switch

Quick Answer

The OBD-II diagnostic trouble code P0850 in a 2007 Nissan Maxima refers to an issue with the Park/Neutral Switch. Common causes include Faulty Park/Neutral Switch, Damaged wiring or connectors related to the switch, Corrosion or contamination affecting the switch's operation. 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 Faulty Park/Neutral Switch, Damaged wiring or connectors related to the switch, Corrosion or contamination affecting the switch's operation.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code P0850 2007 Nissan Maxima Description

The OBD-II diagnostic trouble code P0850 in a 2007 Nissan Maxima refers to an issue with the Park/Neutral Switch. This switch, also known as the transmission range sensor, is responsible for detecting the position of the gear shift lever and informing the vehicle's computer system whether the transmission is in Park or Neutral. When this code is triggered, it indicates a problem with the switch's operation, which can have various implications for the vehicle's performance and safety.

OBDII Code P0850 2007 Nissan Maxima - Park/Neutral Switch
P0850 2007 Nissan Maxima Code - Park/Neutral Switch

Common Causes of P0850 2007 Nissan Maxima

  1. Faulty Park/Neutral Switch
  2. Damaged wiring or connectors related to the switch
  3. Corrosion or contamination affecting the switch's operation
  4. Issues with the transmission control module
  5. Mechanical issues with the gear shift mechanism

Symptoms of P0850 2007 Nissan Maxima

  1. Difficulty starting the vehicle
  2. Engine starting in gear other than Park or Neutral
  3. Inability to shift out of Park
  4. Incorrect gear display on the instrument cluster
  5. Illumination of the Check Engine Light

How to Fix P0850 2007 Nissan Maxima

  1. Diagnose the issue by connecting a scan tool to retrieve the specific trouble code and verify the operation of the Park/Neutral Switch.
  2. Inspect the wiring and connectors for any damage, corrosion, or loose connections. Repair or replace as necessary.
  3. Test the Park/Neutral Switch for proper operation and replace if faulty.
  4. Clear the trouble code from the vehicle's computer system and perform a test drive to ensure the issue has been resolved.
  5. If the problem persists, further diagnostics may be needed to pinpoint the root cause, such as testing the transmission control module or checking the gear shift mechanism.

Cost to Fix P0850 2007 Nissan Maxima

The cost of repairing a P0850 code in a 2007 Nissan Maxima can vary depending on the specific cause of the issue and the labor rates in your area. On average, the parts for this repair, including a new Park/Neutral Switch, can range from $50 to $150. The labor cost for this repair can vary between $100 to $300, depending on the shop's hourly rate and the complexity of the repair. Overall, the total cost for addressing a P0850 code in a 2007 Nissan Maxima can range from $150 to $450. It is recommended to obtain quotes from multiple repair shops to compare prices and ensure a fair cost for the repair.

When is the Code Detected?

The signal of the park/neutral position (PNP) switch is not changed in the process of engine starting and driving.

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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.

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