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Engine-Codes – Chevrolet – P0852 Chevrolet

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

Quick Answer

The P0852 code for Chevrolet vehicles indicates a problem with the Park/Neutral Position (PNP) switch circuit registering high voltage. Common causes include Faulty Park/Neutral Position (PNP) switch, Damaged or corroded wiring in the PNP switch circuit, Loose or poor electrical connections in the 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 Chevrolet indicates Park/Neutral Position Switch Circuit High Voltage.
Common causes
Common causes include Faulty Park/Neutral Position (PNP) switch, Damaged or corroded wiring in the PNP switch circuit, Loose or poor electrical connections in the 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.
What is this?
Table of contents Created and updated by William Orellana on Sep 05, 2024
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Code P0852 Chevrolet Description

The P0852 code for Chevrolet vehicles indicates a problem with the Park/Neutral Position (PNP) switch circuit registering high voltage. The PNP switch, also known as the neutral safety switch, is a crucial component that ensures the vehicle can only be started in Park or Neutral gear positions. When the PNP switch circuit detects high voltage, it suggests an issue with the switch itself, the wiring, or related components. This can lead to difficulties starting the vehicle, as it may not recognize when it is in the correct gear position. If left unaddressed, the PNP switch issue can potentially result in safety concerns, as the vehicle may be started in gear, posing a risk of unintended movement.

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

Common Causes of P0852 Chevrolet

  1. Faulty Park/Neutral Position (PNP) switch.
  2. Damaged or corroded wiring in the PNP switch circuit.
  3. Loose or poor electrical connections in the circuit.
  4. Faulty transmission range sensor.
  5. Issues with the vehicle's computer system.

Symptoms of P0852 Chevrolet

  1. Difficulty starting the vehicle or no start condition.
  2. Inability to shift out of Park.
  3. Incorrect gear display on the instrument cluster.
  4. Check Engine Light illuminated on the dashboard.
  5. Engine stalling when coming to a stop.

How to Fix P0852 Chevrolet

  1. Inspect the PNP switch and wiring for any visible damage or corrosion.
  2. Test the PNP switch using a multimeter to check for proper voltage readings.
  3. Check and clean any electrical connectors related to the PNP switch.
  4. Replace the PNP switch if it is found to be faulty.
  5. Clear the diagnostic trouble codes and test the vehicle to ensure the issue is resolved.

Cost to Fix P0852 Chevrolet

The cost of repairing a P0852 code in a Chevrolet vehicle can vary depending on the specific model and year of the vehicle. In general, the parts cost for a new PNP switch can range from $50 to $150, while the labor cost for the repair can be between $100 and $200. Considering the diagnosis time and labor rates at auto repair shops, the total cost could fall between $150 and $350. It is advisable to consult with a trusted mechanic or dealership to get an accurate estimate based on the vehicle's individual circumstances.

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Information for Specific Chevrolet Models

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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