AutoCodes – Generic – P182D

P182D 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 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.

Save to My Repairs My Repairs

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

Code Popularity 7,104

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

What does this mean?

What are the Possible Causes of the DTC P182D?

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?

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 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 P182D code?

Need more information on how to fix the P182D code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P182D code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P182D Buick — Internal Mode Switch 'P' Circuit High Voltage
P182D Cadillac — Internal Mode Switch 'P' Circuit High Voltage
P182D Chevrolet — Internal Mode Switch 'P' Circuit High Voltage
P182D GMC — 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 Code

1. What are the common symptoms of OBDII code P182D?

- Common symptoms include issues with shifting gears, hesitation or jerking during acceleration, and illuminated Check Engine Light.

2. What causes the Internal Mode Switch 'P' Circuit High Voltage code (P182D) to trigger?

- The code is typically triggered by a malfunction in the internal mode switch, which is responsible for communicating gear position information to the vehicle's computer.

3. Can driving with OBDII code P182D cause further damage to the vehicle?

- Continuing to drive with this code may lead to transmission-related issues and could potentially cause damage to the transmission system if left unresolved.

4. How can I diagnose and repair OBDII code P182D?

- Diagnosis involves checking the internal mode switch and its associated wiring for any faults or damage. Repair may involve replacing the internal mode switch or repairing the wiring as needed.

5. Is it safe to continue driving my vehicle with OBDII code P182D?

- It is not recommended to drive the vehicle with this code present, as it can lead to performance issues and potential transmission damage. It is best to address the issue promptly.

6. Can a DIY enthusiast fix OBDII code P182D at home?

- While some experienced DIY enthusiasts may be able to diagnose and repair this code at home, it is recommended to seek professional help, especially when dealing with transmission-related issues.

7. How much does it typically cost to repair OBDII code P182D?

- The cost of repairing this code can vary depending on the root cause of the issue, the extent of repairs needed, and labor rates. It's advisable to get a diagnostic and repair estimate from a qualified mechanic.

8. Are there any preventative maintenance tips to avoid OBDII code P182D?

- Regularly servicing the transmission, checking for any signs of wear or damage in the internal mode switch, and addressing any transmission-related issues promptly can help prevent this code from triggering.

9. How long does it usually take to repair OBDII code P182D?

- The repair time for this code can vary depending on the complexity of the issue, availability of parts, and the mechanic's workload. It's best to consult with your mechanic for a more accurate estimate.

10. Can resetting the Check Engine Light clear OBDII code P182D permanently?

- Resetting the Check Engine Light may temporarily clear the code, but if the underlying issue causing P182D is not addressed, the code is likely to reappear. It's important to diagnose and repair the root cause of the problem.