P0852 2017 Chevrolet Silverado Code - Park/Neutral Position Switch Circuit High Voltage
Quick Answer
The transmission manual shift shaft switch assembly, also known as the Internal Mode Switch (IMS), is a sliding contact switch attached to the manual shift shaft inside the transmission case. Common causes include Faulty Transmission Internal Mode Switch (IMS), Transmission Internal Mode Switch harness is open or shorted, Transmission Internal Mode Switch circuit poor electrical connection. 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 Chevrolet Silverado indicates Park/Neutral Position Switch Circuit High Voltage.
- Common causes
- Common causes include Faulty Transmission Internal Mode Switch (IMS), Transmission Internal Mode Switch harness is open or shorted, Transmission Internal Mode Switch circuit poor electrical connection.
- 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.
Code P0852 2017 Chevrolet Silverado Description
The state of each input is available for display on the scan tool. The five input parameters represented are Signal A, Signal B, Signal C, Signal P (Parity), and Signal N (Park/Neutral Start Signal). Park/Neutral Signal is sent from the Park/Neutral switch directly to the Engine Control Module (ECM) and is used for engine start enable. The Park/Neutral Signal circuit is not connected to the TCM internally; the circuit uses the TCM as a pass-through connector only. The Diagnostic Trouble Code (DTC) will be set when the ECM detects the Park/Neutral switch signal equals 12 V, High, when the IMS reports a Park/Neutral range.
What are the Possible Causes of the DTC P0852 2017 Chevrolet Silverado?
- Faulty Transmission Internal Mode Switch (IMS)
- Transmission Internal Mode Switch harness is open or shorted
- Transmission Internal Mode Switch circuit poor electrical connection
- Faulty Control Solenoid Valve Assembly
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0852 2017 Chevrolet Silverado?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0852 2017 Chevrolet Silverado code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P0852 2017 Chevrolet Silverado Code
What does the OBDII code P0852 mean on a 2017 Chevrolet Silverado?
P0852 indicates a high voltage issue in the Park/Neutral Position Switch Circuit, which monitors the gear position to ensure proper operation of the transmission and starting system.
What are the common symptoms of code P0852 on a 2017 Chevrolet Silverado?
Symptoms may include difficulty starting the engine, the transmission not shifting properly, or the gear position indicator not functioning correctly.
What causes the P0852 code to trigger on a 2017 Chevrolet Silverado?
Common causes include a faulty Park/Neutral Position Switch, damaged wiring or connectors in the circuit, or corrosion affecting the electrical connections.
Can I still drive my 2017 Chevrolet Silverado with the P0852 code active?
While the vehicle may still be drivable, issues like improper gear shifting or starting difficulties could worsen, potentially leading to unsafe conditions. It’s best to address the issue promptly.
How do I diagnose the P0852 code on my 2017 Chevrolet Silverado?
Start by inspecting the Park/Neutral Position Switch, wiring, and connectors for damage or corrosion. Use a multimeter to check for proper voltage and continuity in the circuit.
Is the P0852 code related to the transmission performance?
Yes, the Park/Neutral Position Switch is tied to transmission operation, and issues with this circuit can cause gear-shifting problems or prevent the vehicle from starting.
Can a dead battery or low voltage cause the P0852 code?
While unlikely, low voltage or inconsistent battery power can contribute to electrical issues. Ensure the battery and charging system are functioning properly before diagnosing further.
How much does it cost to repair the P0852 code on a 2017 Chevrolet Silverado?
Repair costs vary depending on the issue. Replacing the Park/Neutral Position Switch may cost $100-$300, while wiring repairs could range from $50-$150.
Do I need special tools to fix the P0852 code on my 2017 Chevrolet Silverado?
Basic tools like a multimeter and screwdrivers are often sufficient for diagnosing and repairing this code. In some cases, an OBDII scan tool may be helpful for clearing the code.
Can the P0852 code be fixed without replacing parts?
If the issue is caused by damaged or corroded wiring or connectors, cleaning or repairing these components may resolve the problem without replacing the Park/Neutral Position Switch.
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