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Engine-Codes – Chevrolet – P101C 2016 Chevrolet Silverado

P101C 2016 Chevrolet Silverado Code - Glow Plug Control Module Temperature Sensor 2 Circuit High Voltage

Quick Answer

The P101C diagnostic trouble code (DTC) indicates that the Glow Plug Control Module Temperature Sensor 2 is reporting a high voltage condition. Common causes include Faulty Glow Plug Control Module Temperature Sensor 2, Damaged or corroded wiring or connectors in the sensor circuit, Malfunctioning glow plug control module. 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
P101C 2016 Chevrolet Silverado indicates Glow Plug Control Module Temperature Sensor 2 Circuit High Voltage.
Common causes
Common causes include Faulty Glow Plug Control Module Temperature Sensor 2, Damaged or corroded wiring or connectors in the sensor circuit, Malfunctioning glow plug control module.
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 P101C 2016 Chevrolet Silverado Description

The P101C diagnostic trouble code (DTC) indicates that the Glow Plug Control Module Temperature Sensor 2 is reporting a high voltage condition. This sensor is integral to the operation of the glow plug system, which is crucial for starting diesel engines, particularly in cold weather. The glow plugs preheat the combustion chamber to facilitate ignition, and the control module uses temperature sensors to monitor their performance and ensure optimal operation.

OBDII Code P101C 2016 Chevrolet Silverado - Glow Plug Control Module Temperature Sensor 2 Circuit High Voltage
P101C 2016 Chevrolet Silverado Code - Glow Plug Control Module Temperature Sensor 2 Circuit High Voltage

Common Causes of P101C 2016 Chevrolet Silverado

  1. Faulty Glow Plug Control Module Temperature Sensor 2.
  2. Damaged or corroded wiring or connectors in the sensor circuit.
  3. Malfunctioning glow plug control module.
  4. Short circuit or open circuit in the glow plug system.
  5. Faulty glow plugs that are not heating properly.

Symptoms of P101C 2016 Chevrolet Silverado

  1. Difficulty starting the engine, especially in cold weather.
  2. Rough idling or misfires during engine operation.
  3. Increased exhaust smoke, particularly white smoke during startup.
  4. Illuminated check engine light on the dashboard.
  5. Reduced engine power and responsiveness.

How to Fix P101C 2016 Chevrolet Silverado

  1. Diagnostic Testing: Begin by using an OBD-II scanner to confirm the P101C code and check for any additional codes that may provide further insight into the issue.
  2. Visual Inspection: Inspect the wiring and connectors associated with the Glow Plug Control Module Temperature Sensor 2 for signs of damage, corrosion, or loose connections.
  3. Sensor Replacement: If the sensor is determined to be faulty, replace it with a new, OEM-quality part to ensure proper function.
  4. Control Module Check: Test the glow plug control module to ensure it is functioning correctly. If it is found to be defective, it should be replaced.
  5. System Testing: After repairs, clear the DTCs and perform a test drive to ensure that the engine starts smoothly and that the check engine light does not reappear.

Cost to Fix P101C 2016 Chevrolet Silverado

The estimated repair costs for addressing the P101C code can range from $150 to $600, depending on the specific repairs needed. This estimate includes parts, which may cost between $50 to $300 for the sensor and control module, and labor costs, which typically range from $80 to $150 per hour. It's important to note that labor rates can vary significantly based on location, vehicle make and model, and engine type. In metropolitan areas or at dealerships, rates may be higher, while independent shops often offer more competitive pricing. For a precise estimate, it is advisable to consult local repair shops for their rates and diagnostic fees.

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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 P101C 2016 Chevrolet Silverado Code

What does the OBDII code P101C mean on a 2016 Chevrolet Silverado?

P101C indicates a high voltage issue in the Glow Plug Control Module Temperature Sensor 2 circuit, which monitors engine temperature for glow plug operation.

What are common symptoms of P101C on a 2016 Chevrolet Silverado?

Symptoms may include difficulty starting in cold weather, reduced engine performance, or an illuminated check engine light.

What causes the P101C code on a 2016 Chevrolet Silverado?

Common causes include a faulty temperature sensor, damaged wiring or connectors, or issues with the glow plug control module.

Can I still drive my 2016 Chevrolet Silverado with the P101C code?

While the truck may still be drivable, ignoring the code can lead to starting issues or further damage to the glow plug system, especially in cold climates.

How do you diagnose the P101C code on a 2016 Chevrolet Silverado?

Diagnosis involves inspecting the temperature sensor, wiring, and connectors for damage, and testing the glow plug control module for proper function.

How do you fix the P101C code on a 2016 Chevrolet Silverado?

Repairs may include replacing the temperature sensor, repairing damaged wiring or connectors, or replacing the glow plug control module.

How much does it cost to fix the P101C code on a 2016 Chevrolet Silverado?

The repair cost depends on the issue but typically ranges from $100 to $300 for parts and labor, depending on whether a sensor or module replacement is needed.

Can a faulty Glow Plug Control Module cause other issues?

Yes, a failing module can result in poor cold engine starts, reduced fuel efficiency, and potential damage to other components in the glow plug system.

How can I prevent the P101C code from appearing on my 2016 Chevrolet Silverado?

Regular maintenance, including inspecting wiring and connectors and promptly addressing any warning signs, can help prevent this issue.

Do I need special tools to fix the P101C code on a 2016 Chevrolet Silverado?

Basic tools like a multimeter and an OBDII scanner are often sufficient for diagnosing and repairing this code, but advanced tools may be needed for module replacement.

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