AutoCodes – Buick – P182A Buick

P182A Buick 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 Buick 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 1,522

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

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

What does this mean?

What are the Possible Causes of the DTC P182A 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 P182A 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 P182A 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.

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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 P182A Buick Code

1. What are the common symptoms of OBDII code P182A in a Buick related to the Internal Mode Switch 'A' Circuit Low Voltage?

- Common symptoms include issues shifting gears, hesitation or jerking during acceleration, and the inability to select certain gear positions.

2. What are the possible causes of OBDII code P182A Buick Internal Mode Switch 'A' Circuit Low Voltage?

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

3. How can I diagnose OBDII code P182A in a Buick related to the Internal Mode Switch 'A' Circuit Low Voltage?

- Diagnose the code by using a scan tool to retrieve the specific fault code, inspecting the wiring and connectors for damage, and testing the internal mode switch for proper operation.

4. Can I drive my Buick with OBDII code P182A Internal Mode Switch 'A' Circuit Low Voltage?

- It is not recommended to drive your Buick with this code as it can lead to further transmission issues and potential safety hazards. It's best to address the problem promptly.

5. How can I repair OBDII code P182A Buick Internal Mode Switch 'A' Circuit Low Voltage?

- Repair options include replacing the internal mode switch if faulty, repairing or replacing damaged wiring or connectors, ensuring proper voltage in the system, and resetting the transmission control module.

6. Is it possible to reset OBDII code P182A Buick Internal Mode Switch 'A' Circuit Low Voltage without repairs?

- While you can clear the code temporarily, it is not recommended to reset it without addressing the underlying issue, as it may lead to recurring problems and potential transmission damage.

7. Can a DIY enthusiast fix OBDII code P182A Buick Internal Mode Switch 'A' Circuit Low Voltage?

- Depending on the individual's skill level, a DIY enthusiast may be able to diagnose and repair this code by following proper diagnostic procedures and utilizing the necessary tools and resources.

8. How much does it typically cost to repair OBDII code P182A Buick Internal Mode Switch 'A' Circuit Low Voltage?

- The cost of repair can vary depending on the extent of the issue and the parts needed. It's recommended to consult a professional mechanic for an accurate estimate.

9. Will OBDII code P182A Buick Internal Mode Switch 'A' Circuit Low Voltage cause permanent damage to my vehicle?

- Ignoring this code can potentially cause permanent damage to the transmission system over time. It's crucial to address the issue promptly to prevent further complications.

10. How long does it take to repair OBDII code P182A Buick Internal Mode Switch 'A' Circuit Low Voltage?

- The repair time can vary based on the specific problem and the expertise of the technician. In general, it may take a few hours to a day to diagnose and repair the issue properly.