AutoCodes – Cadillac – P182C Cadillac

P182C Cadillac Code - Internal Mode Switch 'B' 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: P182C Cadillac indicates Internal Mode Switch 'B' 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 1,025

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 P182C Cadillac 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 B signal circuit voltage is greater than 2.38 V, for 1.75 s.

OBDII Code P182C Cadillac - Internal Mode Switch 'B' Circuit High Voltage - AutoCodes.com — P182C Cadillac Code - Internal Mode Switch 'B' Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P182C Cadillac?

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 P182C Cadillac?

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 P182C Cadillac 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 P182C Cadillac Code

1. What are common symptoms of OBDII code P182C in a Cadillac related to the Internal Mode Switch 'B' Circuit High Voltage?

- Common symptoms include issues with shifting gears, erratic shifting patterns, and the transmission not responding properly.

2. What can cause the Internal Mode Switch 'B' Circuit High Voltage code (P182C) to trigger in a Cadillac?

- Possible causes include a faulty internal mode switch, damaged wiring or connectors, or an issue with the transmission control module.

3. How can I diagnose the Internal Mode Switch 'B' Circuit High Voltage code (P182C) in my Cadillac?

- Diagnosis typically involves using an OBDII scanner to read the code, checking the internal mode switch and related wiring for damage, and testing the transmission control module.

4. Can driving with the Internal Mode Switch 'B' Circuit High Voltage code (P182C) cause further damage to my Cadillac?

- Continuing to drive with this code may lead to further transmission issues and potentially cause damage to other components, so it's best to address the problem promptly.

5. Is it safe to continue driving my Cadillac if the Internal Mode Switch 'B' Circuit High Voltage code (P182C) is present?

- It is not recommended to drive the vehicle with this code present, as it can affect the transmission's performance and potentially lead to safety hazards on the road.

6. How can I repair the Internal Mode Switch 'B' Circuit High Voltage code (P182C) in my Cadillac?

- Repair options may include replacing the internal mode switch, repairing damaged wiring or connectors, or reprogramming the transmission control module.

7. Are there any DIY tips for troubleshooting the Internal Mode Switch 'B' Circuit High Voltage code (P182C) in my Cadillac?

- DIY tips include checking for loose or damaged wiring, ensuring proper connections, and consulting the vehicle's service manual for specific troubleshooting steps.

8. How much does it typically cost to fix the Internal Mode Switch 'B' Circuit High Voltage code (P182C) in a Cadillac?

- Repair costs can vary depending on the specific issue causing the code, but it's advisable to budget for parts and labor costs associated with diagnosing and repairing the problem.

9. Can a mechanic reset the OBDII code P182C related to the Internal Mode Switch 'B' Circuit High Voltage in my Cadillac?

- A mechanic can reset the code after diagnosing and repairing the underlying issue causing the fault code to ensure the problem has been resolved.

10. How can I prevent the Internal Mode Switch 'B' Circuit High Voltage code (P182C) from recurring in my Cadillac?

- Regular maintenance, such as checking the transmission system, inspecting wiring harnesses, and addressing any issues promptly, can help prevent the code from recurring.