Engine-CodesChevrolet – P0852 2014 Chevrolet Silverado

P0852 2014 Chevrolet Silverado Code - Park/Neutral Position Switch Circuit High Voltage

Quick Answer

The P0852 diagnostic trouble code (DTC) specifically relates to the Park/Neutral Position (PNP) switch circuit in a 2014 Chevrolet Silverado. Common causes include Faulty Park/Neutral Position (PNP) switch, Damaged wiring or connectors in the PNP switch circuit, Corrosion or water damage in the PNP switch circuit. 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
P0852 2014 Chevrolet Silverado indicates Park/Neutral Position Switch Circuit High Voltage.
Common causes
Common causes include Faulty Park/Neutral Position (PNP) switch, Damaged wiring or connectors in the PNP switch circuit, Corrosion or water damage in the PNP switch circuit.
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 12, 2024
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Code P0852 2014 Chevrolet Silverado Description

The P0852 diagnostic trouble code (DTC) specifically relates to the Park/Neutral Position (PNP) switch circuit in a 2014 Chevrolet Silverado. This code indicates that there is a high voltage condition detected in the PNP switch circuit. The PNP switch, also known as the transmission range sensor, is responsible for informing the vehicle's engine control module (ECM) of the transmission gear position. This information is crucial for the ECM to adjust various parameters such as ignition timing, fuel delivery, and transmission shifting points.

OBDII Code P0852 2014 Chevrolet Silverado - Park/Neutral Position Switch Circuit High Voltage
P0852 2014 Chevrolet Silverado Code - Park/Neutral Position Switch Circuit High Voltage

Common Causes of P0852 2014 Chevrolet Silverado

  1. Faulty Park/Neutral Position (PNP) switch
  2. Damaged wiring or connectors in the PNP switch circuit
  3. Corrosion or water damage in the PNP switch circuit
  4. ECM software issue or malfunction
  5. Mechanical damage to the transmission range sensor

Symptoms of P0852 2014 Chevrolet Silverado

  1. Difficulty starting the vehicle
  2. Harsh shifting or erratic transmission behavior
  3. Inability to shift gears properly
  4. Illumination of the Check Engine Light
  5. Stalling or hesitation while driving

How to Fix P0852 2014 Chevrolet Silverado

  1. Begin by using a diagnostic scan tool to retrieve the specific trouble code and verify the issue.
  2. Inspect the wiring and connectors in the PNP switch circuit for any damage or corrosion. Repair or replace as needed.
  3. Test the PNP switch for proper functionality using a multimeter. Replace the switch if it is found to be faulty.
  4. Clear the trouble code from the ECM memory and test drive the vehicle to ensure the issue has been resolved.
  5. If the problem persists, further diagnosis may be required to check for any underlying transmission or ECM issues.

Cost to Fix P0852 2014 Chevrolet Silverado

The typical repair costs for addressing a P0852 code on a 2014 Chevrolet Silverado can vary depending on the exact cause of the issue. On average, the parts cost for a new PNP switch ranges from $50 to $150, while labor costs can range from $100 to $200. The total repair cost can therefore range from $150 to $350. It is important to note that additional diagnostic time and labor may be needed if further issues are discovered during the repair process. As always, it is recommended to consult with a certified mechanic or dealership for a more accurate estimate based on your specific vehicle and location.

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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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