AutoCodes – Chevrolet – P182F Chevrolet

P182F Chevrolet Code - Internal Mode Switch 'C' 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: P182F Chevrolet indicates Internal Mode Switch 'C' 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 5,284

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 P182F 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 C signal circuit voltage is greater than 2.38 V, for 1.75 s.

OBDII Code P182F Chevrolet - Internal Mode Switch 'C' Circuit High Voltage - AutoCodes.com — P182F Chevrolet Code - Internal Mode Switch 'C' Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P182F 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 P182F 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 P182F 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.

Need more information about the P182F Chevrolet code?

Need more information on how to fix the P182F Chevrolet code? Get Access to Factory Service Manuals

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Information for Specific Chevrolet Models

P182F 2014 Chevrolet Silverado — Internal Mode Switch 'C' Circuit High Voltage
P182F 2015 Chevrolet Silverado — Internal Mode Switch 'C' Circuit High Voltage
P182F 2016 Chevrolet Silverado — Internal Mode Switch 'C' Circuit High Voltage
P182F 2017 Chevrolet Silverado — Internal Mode Switch 'C' Circuit High Voltage
P182F 2018 Chevrolet Silverado — Internal Mode Switch 'C' 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 P182F Chevrolet Code

What does the OBDII code P182F mean in a Chevrolet?

Code P182F indicates that the transmission control module (TCM) detected a high voltage signal from the Internal Mode Switch (IMS) 'C' circuit.

What are the common symptoms of code P182F in a Chevrolet?

Symptoms may include a check engine light, transmission stuck in one gear, erratic shifting, or failure to shift.

What causes the P182F code to appear in a Chevrolet?

Common causes include a faulty Internal Mode Switch (IMS), damaged wiring or connectors in the IMS circuit, or a malfunctioning transmission control module (TCM).

How can I diagnose the P182F code in my Chevrolet?

Start by scanning the vehicle with an OBDII tool, visually inspecting the IMS wiring and connectors, and testing the IMS 'C' circuit for high voltage using a multimeter.

Can a faulty Internal Mode Switch cause shifting issues?

Yes, a faulty IMS can send incorrect signals to the TCM, leading to shifting problems or the transmission being stuck in a specific gear.

How do I repair the P182F code in a Chevrolet?

Repairs may include replacing the Internal Mode Switch, repairing damaged wiring or connectors, or reprogramming or replacing the TCM if necessary.

Is it safe to drive with the P182F code active?

Driving with code P182F active may lead to further transmission damage or unsafe driving conditions due to shifting issues, so itâ€™s best to address the issue promptly.

How much does it cost to fix the P182F code in a Chevrolet?

Repair costs vary but may range from $150 to $800 depending on whether the IMS, wiring, or TCM needs repair or replacement.

Can a dead battery cause the P182F code?

While unlikely, a weak or dead battery could cause electrical inconsistencies that might trigger the code. Always ensure the battery is in good condition.

Do I need to reprogram the TCM after fixing the P182F code?

In some cases, reprogramming the TCM may be required after replacing components like the IMS to ensure proper communication and functionality.