P0852 2016 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 2016 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 2016 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 2016 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 2016 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 2016 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 2016 Chevrolet Silverado Code
What does the OBDII code P0852 mean for a 2016 Chevrolet Silverado?
Code P0852 indicates a high voltage issue in the Park/Neutral Position (PNP) Switch Circuit, which monitors the gear selection to ensure proper vehicle operation.
What are common symptoms of code P0852 in a 2016 Chevrolet Silverado?
Symptoms can include the check engine light turning on, issues starting the vehicle, incorrect gear indication, or the transmission not shifting properly.
What causes the P0852 code in a Chevrolet Silverado?
Common causes include a faulty Park/Neutral Position switch, damaged wiring or connectors in the PNP circuit, or a malfunctioning transmission control module (TCM).
How is the P0852 code diagnosed?
A mechanic will use an OBDII scanner to confirm the code, inspect the PNP switch and its wiring, and perform voltage and continuity tests to identify the issue.
Can I drive my 2016 Silverado with the P0852 code?
Driving with this code is not recommended, as it can lead to erratic transmission behavior and potentially damage the transmission system.
How do you fix the P0852 code on a 2016 Chevrolet Silverado?
Repairs may include replacing the Park/Neutral Position switch, repairing or replacing damaged wiring, or reprogramming or replacing the transmission control module.
How much does it cost to repair the P0852 code?
The repair cost can vary, but replacing a PNP switch generally ranges between $100 and $300, including parts and labor. Additional costs may apply if wiring or the TCM is involved.
Can a dead battery cause the P0852 code?
A dead or weak battery is unlikely to directly cause this code, but electrical issues like low voltage may exacerbate wiring or sensor problems in the PNP circuit.
Does the P0852 code always mean the PNP switch is bad?
Not necessarily. While the PNP switch is a common culprit, the issue could also stem from wiring problems, poor electrical connections, or a failing TCM.
What tools are needed to fix the P0852 code?
Basic tools include an OBDII scanner, a multimeter for testing voltage and continuity, and standard hand tools for accessing and replacing the PNP switch or wiring.
Discuss the causes and fixes for P0852 2016 Chevrolet Silverado OBDII Code
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