AutoCodes – Chevrolet – P182D Chevrolet

P182D Chevrolet Code - Internal Mode Switch 'P' Circuit High 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: P182D Chevrolet indicates Internal Mode Switch 'P' Circuit High 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 2,819

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 P182D Chevrolet 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 greater than 2.38 V, for 1.75 s.

OBDII Code P182D Chevrolet - Internal Mode Switch 'P' Circuit High Voltage - AutoCodes.com — P182D Chevrolet Code - Internal Mode Switch 'P' Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P182D Chevrolet?

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 P182D Chevrolet?

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 P182D Chevrolet 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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Information for Specific Chevrolet Models

P182D 2014 Chevrolet Silverado — Internal Mode Switch 'P' Circuit High Voltage
P182D 2015 Chevrolet Silverado — Internal Mode Switch 'P' Circuit High Voltage
P182D 2016 Chevrolet Silverado — Internal Mode Switch 'P' Circuit High Voltage
P182D 2017 Chevrolet Silverado — Internal Mode Switch 'P' Circuit High Voltage
P182D 2018 Chevrolet Silverado — Internal Mode Switch 'P' Circuit High Voltage

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 P182D Chevrolet Code

1. What are the common symptoms of OBDII code P182D (Internal Mode Switch 'P' Circuit High Voltage) in a Chevrolet?

- Common symptoms include issues with shifting gears, hesitation or jerking during acceleration, and the transmission not engaging properly.

2. What are the possible causes of OBDII code P182D in a Chevrolet?

- Possible causes include a faulty internal mode switch, damaged wiring or connectors in the internal mode switch circuit, or issues with the transmission control module.

3. How can I diagnose OBDII code P182D in my Chevrolet?

- Diagnosis typically involves using a scan tool to read the code, checking the internal mode switch and its circuit for proper operation, and inspecting the wiring and connectors for any damage or loose connections.

4. Can I continue driving my Chevrolet with OBDII code P182D present?

- It is not recommended to continue driving with this code present, as it can lead to further transmission issues and potential safety hazards. It is best to address the problem promptly.

5. How can I repair OBDII code P182D in my Chevrolet?

- Repairing this code may involve replacing the internal mode switch, repairing or replacing damaged wiring or connectors, or reprogramming the transmission control module.

6. Is it possible to reset OBDII code P182D in a Chevrolet without fixing the underlying issue?

- While you can clear the code using a scan tool, it is important to address the underlying problem causing the code to prevent further transmission issues.

7. Are there any common mistakes to avoid when troubleshooting OBDII code P182D in a Chevrolet?

- Common mistakes include overlooking damaged wiring or connectors, not properly diagnosing the internal mode switch, and failing to clear the code after making repairs.

8. How much does it typically cost to repair OBDII code P182D in a Chevrolet?

- The cost of repairs can vary depending on the specific issue causing the code, the labor rates of the repair shop, and the cost of replacement parts. It is recommended to get a few quotes from different shops.

9. Will OBDII code P182D cause my Chevrolet to fail an emissions test?

- Yes, this code can cause your vehicle to fail an emissions test, as it indicates a problem with the transmission that can affect emissions control systems.

10. Can a DIY enthusiast with basic automotive knowledge repair OBDII code P182D in a Chevrolet?

- While some aspects of diagnosing and repairing this code may be within reach for a DIY enthusiast, it is recommended to seek professional help for proper diagnosis and repair to ensure the issue is resolved correctly.