AutoCodes – Chevrolet – P182A Chevrolet

P182A Chevrolet Code - Internal Mode Switch 'A' 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: P182A Chevrolet indicates Internal Mode Switch 'A' 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 4,821

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 P182A 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 A signal circuit voltage is less than 0.7 V, for 1.75 s.

OBDII Code P182A Chevrolet - Internal Mode Switch 'A' Circuit Low Voltage - AutoCodes.com — P182A Chevrolet Code - Internal Mode Switch 'A' Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P182A 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 P182A 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 P182A 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

P182A 2014 Chevrolet Silverado — Internal Mode Switch 'A' Circuit Low Voltage
P182A 2015 Chevrolet Silverado — Internal Mode Switch 'A' Circuit Low Voltage
P182A 2016 Chevrolet Silverado — Internal Mode Switch 'A' Circuit Low Voltage
P182A 2017 Chevrolet Silverado — Internal Mode Switch 'A' Circuit Low Voltage
P182A 2018 Chevrolet Silverado — Internal Mode Switch 'A' Circuit Low 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 P182A Chevrolet Code

What does OBDII code P182A mean for my Chevrolet?

OBDII code P182A indicates a low voltage condition in the Internal Mode Switch 'A' circuit, which is part of the vehicle's transmission control system.

What symptoms might I experience with code P182A?

Common symptoms include erratic shifting, transmission performance issues, or the transmission not engaging properly.

What causes the P182A code to trigger?

The code can be triggered by a faulty internal mode switch, wiring issues, or poor connections in the circuit.

Can I drive my vehicle with the P182A code?

While you may be able to drive the vehicle, it is not recommended as it can lead to transmission problems and further damage.

How can I diagnose the issue related to P182A?

Start by inspecting the wiring and connectors for damage or corrosion, then test the internal mode switch for proper functionality.

Are there any common repairs for code P182A?

Repairs may include replacing the internal mode switch, repairing or replacing damaged wiring, or ensuring all connections are secure.

What tools do I need to troubleshoot P182A?

Basic tools include a multimeter for voltage testing, a scan tool for reading codes, and basic hand tools for inspecting and replacing components.

Is it possible for the P182A code to clear on its own?

The code may clear if the underlying issue is resolved, but it is advisable to address the cause to prevent it from returning.

How much does it typically cost to fix the P182A code?

Repair costs can vary widely, typically ranging from $100 to $500, depending on whether it requires simple wire repairs or more extensive component replacements.