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

Quick Answer

The P101C diagnostic trouble code (DTC) for Chevrolet vehicles refers to a Glow Plug Control Module Temperature Sensor 2 Circuit High Voltage. Common causes include Faulty temperature sensor, Damaged wiring or connectors in the temperature 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 Chevrolet indicates Glow Plug Control Module Temperature Sensor 2 Circuit High Voltage.
Common causes
Common causes include Faulty temperature sensor, Damaged wiring or connectors in the temperature 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 Sep 13, 2024
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Code P101C Chevrolet Description

The P101C diagnostic trouble code (DTC) for Chevrolet vehicles refers to a Glow Plug Control Module Temperature Sensor 2 Circuit High Voltage. This code indicates that there is a high voltage condition detected in the temperature sensor circuit of the glow plug control module. The glow plug control module is responsible for managing the operation of the glow plugs in a diesel engine, which are essential for cold-starting the vehicle. The temperature sensor monitors the temperature of the module to ensure proper functioning.

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

Common Causes of P101C Chevrolet

  1. Faulty temperature sensor.
  2. Damaged wiring or connectors in the temperature sensor circuit.
  3. Malfunctioning glow plug control module.
  4. Electrical issues in the vehicle's system.
  5. Corrosion or moisture in the sensor circuit.

Symptoms of P101C Chevrolet

  1. Difficulty starting the engine, especially in cold weather.
  2. Reduced engine power and acceleration.
  3. Illumination of the Check Engine Light on the dashboard.
  4. Increased fuel consumption.
  5. Rough idling or stalling of the engine.

How to Fix P101C Chevrolet

  1. Begin by diagnosing the root cause of the high voltage condition using a diagnostic scanner to retrieve the specific trouble codes and data related to the temperature sensor circuit.
  2. Inspect the temperature sensor, wiring, and connectors for any visible damage or corrosion. Replace any faulty components as needed.
  3. Test the glow plug control module to ensure proper functioning and replace it if necessary.
  4. Clear the DTCs from the vehicle's computer system and perform a test drive to verify that the issue has been resolved.
  5. If the problem persists, consult a professional mechanic for further diagnosis and repair.

Cost to Fix P101C Chevrolet

The typical repair costs for addressing a Glow Plug Control Module Temperature Sensor 2 Circuit High Voltage issue can range from $200 to $500, including parts and labor. However, the 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. It's advisable to check local rates for a more precise estimate. Keep in mind that rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less.

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Information for Specific Chevrolet Models

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 Chevrolet Code

1. What are the common symptoms of OBDII code P101C in a Chevrolet related to the Glow Plug Control Module Temperature Sensor 2 Circuit High Voltage?

- Common symptoms include engine misfires, rough idling, decreased fuel efficiency, and the illumination of the Check Engine Light.

2. What are the possible causes of OBDII code P101C Chevrolet Glow Plug Control Module Temperature Sensor 2 Circuit High Voltage?

- The code can be triggered by a faulty glow plug control module temperature sensor, damaged wiring or connectors, a malfunctioning glow plug control module, or issues with the vehicle's electrical system.

3. How can I diagnose OBDII code P101C in my Chevrolet related to the Glow Plug Control Module Temperature Sensor 2 Circuit High Voltage?

- Diagnosis typically involves using an OBDII scanner to read the code, inspecting the glow plug control module temperature sensor and related components for damage, and testing the sensor's resistance and voltage.

4. Can I continue driving my Chevrolet with OBDII code P101C Glow Plug Control Module Temperature Sensor 2 Circuit High Voltage?

- It is not recommended to continue driving with this code present, as it can lead to poor engine performance and potential damage if left unresolved.

5. How can I repair OBDII code P101C in my Chevrolet?

- Repair options may include replacing the glow plug control module temperature sensor, repairing or replacing damaged wiring or connectors, troubleshooting and fixing issues with the glow plug control module, or addressing any underlying electrical problems.

6. Will clearing the OBDII code P101C Chevrolet Glow Plug Control Module Temperature Sensor 2 Circuit High Voltage make it go away permanently?

- Clearing the code may temporarily turn off the Check Engine Light, but if the underlying issue is not addressed and repaired, the code is likely to return.

7. Are there any DIY tips for troubleshooting OBDII code P101C in a Chevrolet?

- DIY tips include checking for loose or damaged wiring, inspecting the sensor for physical damage, and ensuring all connections are secure before considering sensor replacement.

8. How do I reset the Check Engine Light after repairing OBDII code P101C in my Chevrolet?

- After repairing the issue causing the code, you can reset the Check Engine Light using an OBDII scanner or by disconnecting the car's battery for a few minutes.

9. Can extreme weather conditions affect the performance of the glow plug control module temperature sensor in a Chevrolet?

- Yes, extreme temperatures can impact the sensor's performance, leading to potential circuit high voltage issues and triggering OBDII code P101C.

10. Is it recommended to seek professional help to diagnose and repair OBDII code P101C Chevrolet Glow Plug Control Module Temperature Sensor 2 Circuit High Voltage?

- Due to the complexity of the electrical system and components involved, it is often recommended to seek professional help to accurately diagnose and repair OBDII code P101C in a Chevrolet.

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