Engine-CodesChevrolet – P101D 2018 Chevrolet Silverado

P101D 2018 Chevrolet Silverado Code - Glow Plug Control Module Temperature Sensor 3 Circuit Low Voltage

Quick Answer

The P101D diagnostic trouble code (DTC) for a 2018 Chevrolet Silverado refers to a Glow Plug Control Module Temperature Sensor 3 Circuit Low Voltage. Common causes include Faulty temperature sensor, Wiring issues or poor connections, 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
P101D 2018 Chevrolet Silverado indicates Glow Plug Control Module Temperature Sensor 3 Circuit Low Voltage.
Common causes
Common causes include Faulty temperature sensor, Wiring issues or poor connections, 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.
Table of contents Created and updated by William Orellana on Sep 13, 2024
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Code P101D 2018 Chevrolet Silverado Description

The P101D diagnostic trouble code (DTC) for a 2018 Chevrolet Silverado refers to a Glow Plug Control Module Temperature Sensor 3 Circuit Low Voltage. This code indicates that the temperature sensor for the glow plug control module is detecting a lower voltage than expected. The glow plug control module is responsible for regulating the glow plugs in a diesel engine, which are used to heat the combustion chamber during cold starts. The temperature sensor helps the module determine when to activate the glow plugs based on the engine's temperature.

OBDII Code P101D 2018 Chevrolet Silverado - Glow Plug Control Module Temperature Sensor 3 Circuit Low Voltage
P101D 2018 Chevrolet Silverado Code - Glow Plug Control Module Temperature Sensor 3 Circuit Low Voltage

Common Causes of P101D 2018 Chevrolet Silverado

  1. Faulty temperature sensor
  2. Wiring issues or poor connections
  3. Malfunctioning glow plug control module
  4. Engine temperature sensor malfunction
  5. Corrosion or damage to electrical components

Symptoms of P101D 2018 Chevrolet Silverado

  1. Extended cranking time before the engine starts
  2. Rough or uneven idling
  3. Decreased fuel efficiency
  4. Engine misfires
  5. Illumination of the check engine light

How to Fix P101D 2018 Chevrolet Silverado

  1. Begin by diagnosing the issue using a diagnostic scanner to retrieve the specific trouble code and pinpoint the faulty component.
  2. Inspect the wiring and connections related to the temperature sensor and glow plug control module for any damage or corrosion.
  3. Test the temperature sensor for proper voltage readings and replace if necessary.
  4. Check the glow plug control module for proper functioning and replace if found to be faulty.
  5. Clear the trouble code from the vehicle's computer and test the system to ensure proper operation.

Cost to Fix P101D 2018 Chevrolet Silverado

The typical repair costs for addressing a Glow Plug Control Module Temperature Sensor 3 Circuit Low Voltage issue can range from $200 to $500, including parts and labor. However, it's important to note that specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Most auto repair shops charge between $80 and $150 per hour for labor, but rates may be higher in metropolitan areas or at dealerships, while independent shops often charge less. It's recommended to obtain local estimates for a more accurate cost assessment.

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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.

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