AutoCodes – Buick – P182F Buick

P182F Buick 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 Buick 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 1,440

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

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

What does this mean?

What are the Possible Causes of the DTC P182F Buick?

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 Buick?

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 Buick 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 Buick code?

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

Need Help with the Code?

Get the P182F Buick code diagnosed by a professional: Find a repair shop in your area

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 Buick Code

1. What does OBDII code P182F mean on a Buick?

Code P182F indicates that the Internal Mode Switch 'C' Circuit in the transmission has detected a high voltage reading, which may affect gear selection or transmission performance.

2. What are the common symptoms of code P182F in a Buick?

Common symptoms include difficulty shifting gears, the transmission being stuck in one gear, the check engine light illuminating, and poor overall driving performance.

3. What causes code P182F to appear in a Buick?

Possible causes include a faulty internal mode switch, damaged wiring or connectors in the circuit, a short or open circuit, or issues within the transmission control module (TCM).

4. Can code P182F cause transmission damage if ignored?

Yes, ignoring the P182F code can lead to further transmission issues, as improper shifting or gear engagement may cause additional wear or damage over time.

5. How is code P182F diagnosed in a Buick?

A technician will typically use a diagnostic scanner to confirm the code, inspect the Internal Mode Switch 'C' Circuit for wiring or connector issues, and test the switch itself for proper operation.

6. Can I drive my Buick with a P182F code active?

It is not recommended to drive for extended periods with this code active, as transmission performance may be compromised, potentially leading to unsafe driving conditions or further damage.

7. How much does it cost to repair a P182F code in a Buick?

Repair costs can vary depending on the root cause but typically range from $100 to $500, depending on whether the issue is with the switch, wiring, or transmission control module.

8. Can a software update fix the P182F code in a Buick?

In some cases, a software update for the transmission control module may resolve the issue, but this depends on the specific model and year of the Buick.

9. Is the Internal Mode Switch 'C' Circuit part of the transmission?

Yes, the Internal Mode Switch is located within the transmission and is responsible for communicating the gear selector position to the transmission control module.

10. What tools are needed to fix a P182F code on a Buick?

Basic tools include an OBDII scanner, a multimeter to test for voltage and continuity, and potentially transmission-specific tools if the switch or wiring needs replacement.