Engine-CodesChevrolet – P0850 2017 Chevrolet Silverado

P0850 2017 Chevrolet Silverado Code - Park/Neutral Position Switch Circuit

Quick Answer

The P0850 diagnostic trouble code (DTC) for a 2017 Chevrolet Silverado refers to an issue with the Park/Neutral Position (PNP) switch circuit. Common causes include Faulty Park/Neutral Position (PNP) switch, Wiring harness issues, Malfunctioning transmission control module. 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 2017 Chevrolet Silverado indicates Park/Neutral Position Switch Circuit.
Common causes
Common causes include Faulty Park/Neutral Position (PNP) switch, Wiring harness issues, Malfunctioning transmission control module.
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.
Table of contents Created and updated by William Orellana on Sep 17, 2024
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Code P0850 2017 Chevrolet Silverado Description

The P0850 diagnostic trouble code (DTC) for a 2017 Chevrolet Silverado refers to an issue with the Park/Neutral Position (PNP) switch circuit. The PNP switch, also known as the transmission range sensor, is a crucial component that informs the vehicle's computer about the gear position. This information is essential for various systems in the vehicle, such as the transmission control module, engine control module, and cruise control system.

OBDII Code P0850 2017 Chevrolet Silverado - Park/Neutral Position Switch Circuit
P0850 2017 Chevrolet Silverado Code - Park/Neutral Position Switch Circuit

Common Causes of P0850 2017 Chevrolet Silverado

  1. Faulty Park/Neutral Position (PNP) switch
  2. Wiring harness issues
  3. Malfunctioning transmission control module
  4. Corrosion in electrical connections
  5. Poor vehicle maintenance

Symptoms of P0850 2017 Chevrolet Silverado

  1. Difficulty starting the vehicle
  2. Stalling or hesitation when shifting gears
  3. Inaccurate gear selection display on the dashboard
  4. Check engine light illuminated
  5. Cruise control not functioning properly

How to Fix P0850 2017 Chevrolet Silverado

  1. Begin by diagnosing the issue using a scan tool to retrieve the specific DTC.
  2. Inspect the wiring harness for any damage or corrosion and repair as necessary.
  3. Test the Park/Neutral Position (PNP) switch for proper functionality and replace if faulty.
  4. Check the transmission control module for any signs of malfunction and replace if needed.
  5. Clear the DTC and perform a test drive to ensure the issue has been resolved.

Cost to Fix P0850 2017 Chevrolet Silverado

The typical repair costs for a P0850 code related to the Park/Neutral Position Switch Circuit can range from $150 to $400, including parts and labor. However, it's essential to note that specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It's recommended to check local rates for a more accurate estimate.

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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.

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