Engine-CodesSaturn – P0852 Saturn

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

Quick Answer

The P0852 diagnostic trouble code (DTC) for Saturn vehicles relates to the Park/Neutral Position (PNP) switch circuit registering a high voltage. Common causes include Faulty Park/Neutral Position (PNP) switch, Damaged wiring or connectors in the PNP switch circuit, Corrosion or debris affecting the PNP switch 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
P0852 Saturn 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 debris affecting the PNP switch 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.
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code P0852 Saturn Description

The P0852 diagnostic trouble code (DTC) for Saturn vehicles relates to the Park/Neutral Position (PNP) switch circuit registering a high voltage. The PNP switch, also known as the neutral safety switch, is a crucial component in automatic transmissions that prevents the engine from starting unless the transmission is in park or neutral. When the PNP switch circuit detects a high voltage, it indicates a potential issue with the switch's operation, which can lead to various problems with the vehicle's performance.

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

Common Causes of P0852 Saturn

  1. Faulty Park/Neutral Position (PNP) switch
  2. Damaged wiring or connectors in the PNP switch circuit
  3. Corrosion or debris affecting the PNP switch operation
  4. Issues with the transmission control module (TCM)
  5. Electrical system faults affecting the PNP switch circuit

Symptoms of P0852 Saturn

  1. Engine not starting or cranking
  2. Transmission shifting issues
  3. Check engine light illuminated
  4. Vehicle going into "limp mode"
  5. Inability to shift out of park

How to Fix P0852 Saturn

  1. Begin by diagnosing the PNP switch circuit using a diagnostic scan tool to confirm the P0852 code.
  2. Inspect the wiring and connectors in the PNP switch circuit for any damage, corrosion, or loose connections.
  3. Test the PNP switch's operation using a multimeter to determine if it is functioning correctly.
  4. If the PNP switch is faulty, replace it with a new one following the manufacturer's guidelines.
  5. Clear the DTC and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0852 Saturn

The typical repair costs for addressing a P0852 code on a Saturn vehicle can range from $150 to $400, including parts and labor. However, it is important to note that the 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. Rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less. It is advisable to inquire about local rates to obtain a more accurate estimate for this repair.

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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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