AutoCodes – Chevrolet – P1824 2016 Chevrolet Silverado

P1824 2016 Chevrolet Silverado Code - Internal Mode Switch 'P' Circuit Low Voltage

Quick Answer

The internal mode switch indicates the Transmission Control Module (TCM) which gear position the vehicle operator has selected. Common causes include Faulty Transmission Internal Mode Switch, 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: P1824 2016 Chevrolet Silverado indicates Internal Mode Switch 'P' Circuit Low Voltage.
Common causes: Common causes include Faulty Transmission Internal Mode Switch, 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.

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Code Popularity 254

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 23, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1824 2016 Chevrolet Silverado Description

The internal mode switch indicates the Transmission Control Module (TCM) which gear position the vehicle operator has selected. The internal mode switch consists of 5 separate hall effect switches. Each hall effect switch is supplied with a 9 V reference circuit and a signal circuit from the TCM. Each signal circuit for each gear selector position will have either a voltage reading of 0.70-0.96 V indicating On or 1.68-2.38 V indicating Off. The voltage values on each internal mode switch circuit will change and are dependent on the position of the gear selector. The state of each internal mode switch A/B/C/P/S signal circuit is displayed on the scan tool. The Diagnostic Trouble Code (DTC) will be set when the TCM has detected the internal mode switch P signal circuit voltage is less than 0.7 V, for 1.75 s.

OBDII Code P1824 2016 Chevrolet Silverado - Internal Mode Switch 'P' Circuit Low Voltage - AutoCodes.com — P1824 2016 Chevrolet Silverado Code - Internal Mode Switch 'P' Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1824 2016 Chevrolet Silverado?

Faulty Transmission Internal Mode Switch
Transmission Internal Mode Switch harness is open or shorted
Transmission Internal Mode Switch circuit poor electrical connection
Faulty Transmission Control Module (TCM)

How to Fix the DTC P1824 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 P1824 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.

Need more information about the P1824 2016 Chevrolet Silverado code?

Need more information on how to fix the P1824 2016 Chevrolet Silverado code? Get Access to Factory Service Manuals

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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.

Frequently Asked Questions about P1824 2016 Chevrolet Silverado Code

1. What does OBDII code P1824 mean on a 2016 Chevrolet Silverado?

P1824 indicates an "Internal Mode Switch 'P' Circuit Low Voltage," meaning the transmission control module (TCM) is detecting an electrical issue in the switch that monitors the Park (P) position.

2. What are the common symptoms of code P1824 in a 2016 Chevrolet Silverado?

Symptoms include difficulty shifting into or out of Park, the gear position indicator malfunctioning, or the vehicle failing to start because it doesnâ€™t register as being in Park.

3. What causes code P1824 in a 2016 Chevrolet Silverado?

Common causes include wiring issues, a faulty internal mode switch (also known as a transmission range sensor), low battery voltage, or a malfunctioning TCM.

4. Can a low battery trigger code P1824?

Yes, low voltage from the battery or charging system can cause the internal mode switch to send incorrect signals, triggering this code.

5. How do you diagnose code P1824 in a 2016 Chevrolet Silverado?

Diagnosis involves checking the wiring and connectors for damage, testing the internal mode switch for proper operation, and verifying battery voltage and the TCMâ€™s functionality.

6. Can code P1824 cause the transmission to go into limp mode?

Yes, if the TCM cannot determine the correct gear position due to the fault, it may put the transmission into limp mode as a precaution.

7. Is it safe to drive a 2016 Chevrolet Silverado with code P1824?

Driving with this code is not recommended because it can lead to transmission issues, starting problems, or the vehicle failing to recognize when it's in Park.

8. How is code P1824 typically repaired?

Repairs may involve replacing the internal mode switch, repairing or replacing damaged wiring, cleaning corroded connectors, or reprogramming or replacing the TCM.

9. How much does it cost to repair code P1824 on a 2016 Chevrolet Silverado?

Repair costs can vary but typically range from $200 to $600, depending on whether the internal mode switch or other components need replacement.

10. Can a software update fix code P1824 in a 2016 Chevrolet Silverado?

In some cases, a TCM software update may resolve communication issues or glitches related to the internal mode switch, but physical repairs may still be necessary.