AutoCodes – Chevrolet – P182B Chevrolet

P182B Chevrolet Code - Internal Mode Switch 'B' 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: P182B Chevrolet indicates Internal Mode Switch 'B' 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 4,592

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 P182B 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 B signal circuit voltage is less than 0.7 V, for 1.75 s.

OBDII Code P182B Chevrolet - Internal Mode Switch 'B' Circuit Low Voltage - AutoCodes.com — P182B Chevrolet Code - Internal Mode Switch 'B' Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P182B 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 P182B 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 P182B 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.

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Information for Specific Chevrolet Models

P182B 2014 Chevrolet Silverado — Internal Mode Switch 'B' Circuit Low Voltage
P182B 2015 Chevrolet Silverado — Internal Mode Switch 'B' Circuit Low Voltage
P182B 2016 Chevrolet Silverado — Internal Mode Switch 'B' Circuit Low Voltage
P182B 2017 Chevrolet Silverado — Internal Mode Switch 'B' Circuit Low Voltage
P182B 2018 Chevrolet Silverado — Internal Mode Switch 'B' Circuit Low 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 P182B Chevrolet Code

1. What are the common symptoms of OBDII code P182B in a Chevrolet vehicle?

- The common symptoms of P182B include issues with shifting gears, erratic transmission behavior, and in some cases, the transmission may go into "limp mode" where it operates in a single gear.

2. What are the possible causes of the Internal Mode Switch 'B' Circuit Low Voltage code?

- The main causes of P182B can be a faulty internal mode switch, damaged wiring or connectors in the circuit, or issues with the transmission control module.

3. How can I diagnose the Internal Mode Switch 'B' Circuit Low Voltage code in my Chevrolet?

- Diagnosing P182B usually involves using a scan tool to retrieve the fault code, checking the internal mode switch and its circuit for any damage or loose connections, and testing the transmission control module.

4. Can driving with OBDII code P182B cause further damage to my Chevrolet?

- Driving with P182B can potentially cause further damage to the transmission system if the underlying issue is not addressed promptly. It's recommended to address the problem as soon as possible.

5. Is it safe to continue driving my Chevrolet with the P182B code present?

- It is not recommended to continue driving the vehicle with the P182B code present, especially if you are experiencing shifting issues or transmission malfunctions. Continuing to drive may lead to more severe transmission problems.

6. How can I repair OBDII code P182B in my Chevrolet?

- Repairing P182B typically involves replacing the faulty internal mode switch, repairing any damaged wiring or connectors, and clearing the trouble code with a scan tool.

7. Can I reset the P182B code in my Chevrolet without fixing the underlying issue?

- While you can clear the trouble code temporarily, the P182B code is likely to return if the root cause, such as a faulty internal mode switch, is not addressed.

8. Are there any DIY tips for troubleshooting OBDII code P182B in a Chevrolet?

- DIY troubleshooting tips may include visually inspecting the internal mode switch and its wiring for any visible damage, checking the transmission fluid level, and ensuring all connectors are securely attached.

9. How much does it typically cost to repair OBDII code P182B in a Chevrolet?

- The cost of repairing P182B can vary depending on the specific issue, labor rates in your area, and whether you choose to do the repairs yourself or take your vehicle to a professional mechanic.

10. Can a regular car owner without advanced mechanical skills fix the Internal Mode Switch 'B' Circuit Low Voltage code?

- While some DIY enthusiasts may be able to replace the internal mode switch or address simple wiring issues, diagnosing and repairing the P182B code may require advanced mechanical skills and specialized tools, so seeking professional help is often recommended.