P0852 2017 GMC Sierra Code - Park/Neutral Position Switch Circuit High Voltage
Quick Answer
The P0852 diagnostic trouble code (DTC) for a 2017 GMC Sierra 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 2017 GMC Sierra 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 2017 GMC Sierra Description
The P0852 diagnostic trouble code (DTC) for a 2017 GMC Sierra 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 informing the vehicle's computer system about the gear position selected by the driver. This information is crucial for the proper operation of various systems in the vehicle, such as the transmission control module, engine control module, and cruise control.
Common Causes of P0852 2017 GMC Sierra
- Faulty Park/Neutral Position (PNP) switch
- Wiring or connector issues in the PNP switch circuit
- Corrosion or damage to the PNP switch circuit
- Issues with the transmission control module
- Electrical system problems
Symptoms of P0852 2017 GMC Sierra
- Difficulty starting the vehicle
- Incorrect gear display on the dashboard
- Inability to shift gears
- Limp mode activation
- Transmission shifting issues
How to Fix P0852 2017 GMC Sierra
- Begin by diagnosing the specific cause of the high voltage in the PNP switch circuit using a scan tool to read the DTC and perform voltage tests.
- Inspect the PNP switch, wiring, and connectors for any visible damage, corrosion, or loose connections. Repair or replace as necessary.
- Test the transmission control module to ensure it is functioning correctly and communicating with the PNP switch.
- Clear the DTC from the vehicle's computer memory after the repair is completed.
- Test drive the vehicle to confirm that the issue has been resolved and that the PNP switch circuit is functioning within the normal voltage range.
Cost to Fix P0852 2017 GMC Sierra
The typical repair costs for addressing a P0852 DTC in a 2017 GMC Sierra can vary depending on the specific cause of the issue. On average, the parts required for this repair, such as a new PNP switch or wiring harness, can range from $50 to $200. Labor costs at auto repair shops typically range from $80 to $150 per hour, with the total repair time varying based on the complexity of the issue. Therefore, the total cost for resolving a P0852 DTC could range from $150 to $500 or more, including parts and labor. It is recommended to consult with a qualified mechanic or dealership to obtain a more accurate estimate based on the specific circumstances of the vehicle.
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Frequently Asked Questions about P0852 2017 GMC Sierra Code
What does the OBDII code P0852 mean for a 2017 GMC Sierra?
P0852 indicates a high voltage issue in the Park/Neutral Position Switch Circuit, which monitors the transmission's gear position.
What are the common symptoms of code P0852 in a 2017 GMC Sierra?
Symptoms may include the inability to start the vehicle, improper shifting, the transmission stuck in a single gear, or the illumination of the check engine light.
What causes the P0852 code in a 2017 GMC Sierra?
Possible causes include a faulty park/neutral position switch, damaged wiring or connectors, a short circuit, or issues with the vehicle's PCM (Powertrain Control Module).
Can a faulty park/neutral position switch cause starting problems?
Yes, a faulty park/neutral position switch can prevent the vehicle from starting as it may not properly communicate the gear position to the PCM.
How can I diagnose the P0852 code on my 2017 GMC Sierra?
Begin by inspecting the wiring and connectors for damage or corrosion, test the park/neutral position switch for proper operation, and use a multimeter to check voltage levels.
Is it safe to drive a 2017 GMC Sierra with a P0852 code?
Driving with this code may cause transmission shifting issues or starting problems, so it’s best to address the issue promptly to avoid further complications.
How can I fix the P0852 code on my 2017 GMC Sierra?
Repairs may include replacing the park/neutral position switch, repairing damaged wiring or connectors, or reprogramming or replacing the PCM if necessary.
Can a software update resolve the P0852 code?
In some cases, a software update for the PCM might resolve the issue, but this is only applicable if the problem stems from a programming error.
Is the P0852 code specific to GMC vehicles?
No, the P0852 code is a generic OBDII code that can appear on many makes and models, but the exact cause and repair process may vary by vehicle.
How much does it cost to repair the P0852 code on a 2017 GMC Sierra?
Repair costs depend on the root cause but may range from $100 to $400, including parts and labor, with higher costs if the PCM needs replacement.
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