AutoCodes – Chevrolet – P1824 2017 Chevrolet Silverado

P1824 2017 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 2017 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 387

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 2017 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 2017 Chevrolet Silverado - Internal Mode Switch 'P' Circuit Low Voltage - AutoCodes.com — P1824 2017 Chevrolet Silverado Code - Internal Mode Switch 'P' Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1824 2017 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 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 P1824 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.

Need more information about the P1824 2017 Chevrolet Silverado code?

Need more information on how to fix the P1824 2017 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 2017 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P1824 in a 2017 Chevrolet Silverado?

- Common symptoms include issues with shifting gears, rough shifting, hesitation when accelerating, and potentially the inability to shift out of a particular gear.

2. What does the OBDII code P1824 'Internal Mode Switch 'P' Circuit Low Voltage' mean in a 2017 Chevrolet Silverado?

- This code indicates a problem with the internal mode switch circuit related to the 'P' gear in the transmission, specifically signaling low voltage.

3. What are the possible causes of OBDII code P1824 in a 2017 Chevrolet Silverado?

- Potential causes include a faulty internal mode switch, damaged wiring or connectors in the circuit, low voltage issues, or a malfunctioning transmission control module.

4. How can I diagnose the OBDII code P1824 on my 2017 Chevrolet Silverado?

- Diagnosing this code typically involves using a scan tool to retrieve the code, checking the internal mode switch and related circuitry for any visible damage, and testing voltage levels in the circuit.

5. Can I continue driving my 2017 Chevrolet Silverado with OBDII code P1824 present?

- It is not recommended to continue driving with this code active, as it can lead to transmission issues and potentially cause further damage. It's best to address the problem promptly.

6. How can I repair OBDII code P1824 in my 2017 Chevrolet Silverado?

- Repair options include replacing the internal mode switch if faulty, repairing or replacing damaged wiring or connectors, ensuring proper voltage levels, and resetting the fault code.

7. Is it safe to reset the OBDII code P1824 on my 2017 Chevrolet Silverado without fixing the underlying issue?

- While resetting the code may temporarily turn off the warning light, it is not a permanent solution. The underlying problem causing the code should be diagnosed and repaired to prevent further issues.

8. Will OBDII code P1824 cause my 2017 Chevrolet Silverado to go into limp mode?

- Depending on the severity of the issue, this code can potentially trigger the vehicle to go into limp mode to protect the transmission from further damage.

9. Can a DIY enthusiast fix OBDII code P1824 in a 2017 Chevrolet Silverado?

- Depending on the individual's skill level and access to tools, some DIY enthusiasts may be able to diagnose and repair this code. However, complex transmission issues may require professional assistance.

10. How much does it cost to repair OBDII code P1824 in a 2017 Chevrolet Silverado?

- The cost of repairing this code can vary based on the specific cause of the issue, parts needed for replacement, labor rates, and whether the repair is done at a dealership or an independent mechanic. It's advisable to get quotes from different sources for an accurate estimate.