P0852 2018 Chevrolet Silverado Code - Park/Neutral Position Switch Circuit High Voltage
Quick Answer
The P0852 diagnostic trouble code (DTC) for a 2018 Chevrolet Silverado indicates a problem with the Park/Neutral Position (PNP) switch circuit having a high voltage. Common causes include Faulty Park/Neutral Position (PNP) switch, Wiring or connector issues in the PNP switch circuit, Corrosion or damage to 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 2018 Chevrolet Silverado indicates Park/Neutral Position Switch Circuit High Voltage.
- Common causes
- Common causes include Faulty Park/Neutral Position (PNP) switch, Wiring or connector issues in the PNP switch circuit, Corrosion or damage to 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.
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Code P0852 2018 Chevrolet Silverado Description
The P0852 diagnostic trouble code (DTC) for a 2018 Chevrolet Silverado indicates a problem with the Park/Neutral Position (PNP) switch circuit having a high voltage. The PNP switch, also known as the transmission range sensor, is responsible for detecting the gear position of the vehicle, specifically whether it is in Park or Neutral. When the PNP switch circuit registers a high voltage, it means that there is an issue with the electrical signal being sent to the vehicle's engine control module (ECM) or transmission control module (TCM).
Common Causes of P0852 2018 Chevrolet Silverado
- Faulty Park/Neutral Position (PNP) switch
- Wiring or connector issues in the PNP switch circuit
- Corrosion or damage to the PNP switch circuit
- ECM or TCM malfunction
- Electrical system issues
Symptoms of P0852 2018 Chevrolet Silverado
- Difficulty starting the vehicle
- Inability to shift gears or erratic shifting
- Vehicle stalling when put into gear
- Check Engine Light illuminated
- Transmission slipping or jerking during acceleration
How to Fix P0852 2018 Chevrolet Silverado
- Begin by conducting a thorough inspection of the PNP switch circuit, including the switch itself, wiring, and connectors.
- Test the PNP switch for proper operation using a multimeter to check for continuity and voltage readings.
- Replace the PNP switch if it is found to be faulty, ensuring proper alignment and connection.
- Repair any damaged wiring or connectors in the PNP switch circuit.
- Clear the DTC and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P0852 2018 Chevrolet Silverado
The typical repair costs for addressing a P0852 code in a 2018 Chevrolet Silverado can range from $150 to $400, depending on the specific cause of the issue and the cost of parts and labor. It's important to note that diagnosis time and labor rates at auto repair shops can vary, with hourly rates typically ranging from $80 to $150. Factors such as location, vehicle make and model, and engine type can also impact the overall repair costs. It is recommended to obtain a detailed estimate from a trusted auto repair shop to determine the exact cost for resolving this issue.
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