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P182B 2017 Chevrolet Silverado Code - Internal Mode Switch 'B' Circuit Low Voltage

Quick Answer

The P182B code indicates a problem with the Internal Mode Switch 'B' circuit in a 2017 Chevrolet Silverado. Common causes include Faulty Internal Mode Switch 'B' leading to incorrect voltage readings, Damaged or corroded wiring in the circuit affecting voltage levels, Poor electrical connections at the switch or ECM. 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 2017 Chevrolet Silverado indicates Internal Mode Switch 'B' Circuit Low Voltage.
Common causes
Common causes include Faulty Internal Mode Switch 'B' leading to incorrect voltage readings, Damaged or corroded wiring in the circuit affecting voltage levels, Poor electrical connections at the switch or ECM.
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.
What is this?
Table of contents Created and updated by William Orellana on Oct 21, 2024
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Code P182B 2017 Chevrolet Silverado Description

The P182B code indicates a problem with the Internal Mode Switch 'B' circuit in a 2017 Chevrolet Silverado. This code is part of the vehicle's transmission control system, which is responsible for managing gear shifts and overall transmission performance. The Internal Mode Switch is a critical component that communicates the current mode of operation (such as drive, reverse, neutral, etc.) to the Engine Control Module (ECM) and Transmission Control Module (TCM). When the circuit experiences low voltage, it suggests that the switch is not receiving adequate power or that there is a fault in the wiring or connections.

OBDII Code P182B 2017 Chevrolet Silverado - Internal Mode Switch 'B' Circuit Low Voltage
P182B 2017 Chevrolet Silverado Code - Internal Mode Switch 'B' Circuit Low Voltage

Common Causes of P182B 2017 Chevrolet Silverado

  1. Faulty Internal Mode Switch 'B' leading to incorrect voltage readings.
  2. Damaged or corroded wiring in the circuit affecting voltage levels.
  3. Poor electrical connections at the switch or ECM.
  4. Malfunctioning Transmission Control Module (TCM) misinterpreting signals.
  5. Short circuits or open circuits within the Internal Mode Switch circuit.

Symptoms of P182B 2017 Chevrolet Silverado

  1. Erratic or harsh shifting between gears.
  2. Inability to shift into certain gears (e.g., reverse or drive).
  3. Transmission entering "limp mode," where it limits performance.
  4. Illuminated check engine light on the dashboard.
  5. Unusual noises from the transmission during operation.

How to Fix P182B 2017 Chevrolet Silverado

  1. Diagnostic Testing: Begin with a thorough diagnostic scan to confirm the P182B code and check for any related codes that may provide additional context.
  2. Visual Inspection: Inspect the wiring harness and connectors associated with the Internal Mode Switch for signs of damage, corrosion, or loose connections.
  3. Switch Replacement: If the Internal Mode Switch is determined to be faulty, replace it with a new unit to restore proper functionality.
  4. Wiring Repair: Repair or replace any damaged wiring or connectors found during the inspection to ensure a solid electrical connection.
  5. Reprogramming: After repairs, reprogram the TCM if necessary to ensure it recognizes the new switch and functions correctly.

Cost to Fix P182B 2017 Chevrolet Silverado

The typical repair costs for addressing a P182B code can range from $200 to $800, depending on the specific repairs needed. This estimate includes parts, such as a new Internal Mode Switch (which can cost between $50 to $200) and labor costs. Labor rates vary widely based on location, vehicle make and model, and engine type. Most auto repair shops charge between $80 and $150 per hour; however, rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less. It is advisable to check local rates for a more precise estimate. Additionally, the diagnosis time may take 1 to 2 hours, which should also be factored into the overall cost.

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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 P182B 2017 Chevrolet Silverado Code

1. What does the OBDII code P182B mean on a 2017 Chevrolet Silverado?

The code P182B indicates an issue with the Internal Mode Switch 'B' circuit, specifically low voltage detected in the circuit.

2. What are the common symptoms of the P182B code?

Common symptoms include difficulty shifting gears, the transmission stuck in one gear, or the vehicle going into limp mode.

3. What causes the P182B code to appear?

The most common causes are faulty wiring or connectors in the Internal Mode Switch 'B' circuit, a defective mode switch, or a malfunctioning transmission control module (TCM).

4. How can I diagnose the P182B code?

Start by checking the wiring and connectors for damage or corrosion, testing the Internal Mode Switch for proper function, and using a scan tool to confirm the voltage readings from the circuit.

5. Can I drive my 2017 Chevrolet Silverado with the P182B code?

It is possible to drive, but it is not recommended as it could result in further damage to the transmission or unsafe driving conditions.

6. How do I repair the P182B code?

Repairs may include fixing or replacing damaged wiring, cleaning or reconnecting corroded connectors, or replacing the faulty Internal Mode Switch.

7. What tools are needed to fix the P182B code?

You will need a multimeter to test voltage, a scan tool to read and clear codes, and basic hand tools for repairs.

8. How much does it cost to fix the P182B code?

Repair costs can vary, but replacing the Internal Mode Switch typically costs between $150 and $400, depending on labor and part prices.

9. Can a low battery cause the P182B code?

Yes, a weak or failing battery can contribute to low voltage issues, potentially triggering this code.

10. Does the P182B code always mean the Internal Mode Switch is faulty?

Not necessarily. It could also be caused by wiring problems, connector issues, or a fault in the transmission control module. Proper diagnosis is essential.

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