Engine-CodesGeneric – P101E

P101E Code - Glow Plug Control Module Temperature Sensor 3 Circuit High Voltage

Quick Answer

The diagnostic trouble code P101E indicates a problem with the Glow Plug Control Module Temperature Sensor 3 Circuit High Voltage. Common causes include Faulty Glow Plug Control Module Temperature Sensor 3, Damaged or corroded wiring connected to the sensor, Electrical issues in the circuit. 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
P101E indicates Glow Plug Control Module Temperature Sensor 3 Circuit High Voltage.
Common causes
Common causes include Faulty Glow Plug Control Module Temperature Sensor 3, Damaged or corroded wiring connected to the sensor, Electrical issues in the circuit.
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 16, 2024
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Code P101E Description

The diagnostic trouble code P101E indicates a problem with the Glow Plug Control Module Temperature Sensor 3 Circuit High Voltage. This sensor is responsible for monitoring the temperature of the glow plug control module, which is crucial for the proper functioning of the glow plugs in a diesel engine. When the sensor detects a high voltage in the circuit, it means that there is an issue with the temperature sensor or the wiring connected to it.

OBDII Code P101E - Glow Plug Control Module Temperature Sensor 3 Circuit High Voltage
P101E Code - Glow Plug Control Module Temperature Sensor 3 Circuit High Voltage

Common Causes of P101E

  1. Faulty Glow Plug Control Module Temperature Sensor 3.
  2. Damaged or corroded wiring connected to the sensor.
  3. Electrical issues in the circuit.
  4. Poor connection or loose wiring.
  5. Water or moisture intrusion affecting the sensor.

Symptoms of P101E

  1. Difficulty starting the engine, especially in cold weather.
  2. Rough idling or misfiring of the engine.
  3. Decreased fuel efficiency.
  4. Increased emissions.
  5. Illumination of the check engine light on the dashboard.

How to Fix P101E

  1. Begin by diagnosing the issue using a diagnostic scanner to confirm the P101E code.
  2. Inspect the Glow Plug Control Module Temperature Sensor 3 and its wiring for any visible damage or corrosion.
  3. Test the sensor's resistance and voltage to determine if it is functioning correctly.
  4. Replace the faulty sensor if necessary, ensuring proper installation and connection.
  5. Clear the trouble code from the vehicle's computer and test the system to ensure the issue has been resolved.

Cost to Fix P101E

The typical repair costs for addressing the P101E code can vary depending on the specific vehicle make and model, as well as the labor rates in different locations. On average, the parts for replacing the Glow Plug Control Module Temperature Sensor 3 may range from $50 to $150, while the labor costs can be between $100 and $200. Overall, the total repair cost for this issue could be around $150 to $350. It is recommended to consult with a local auto repair shop to get a more accurate estimate based on your vehicle's requirements and location.

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Code P101E Information for Specific Makes

  • P101E Buick — Glow Plug Control Module Temperature Sensor 3 Circuit High Voltage
  • P101E Cadillac — Glow Plug Control Module Temperature Sensor 3 Circuit High Voltage
  • P101E Chevrolet — Glow Plug Control Module Temperature Sensor 3 Circuit High Voltage
  • P101E GMC — Glow Plug Control Module Temperature Sensor 3 Circuit High 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 P101E Code

1. What does the OBDII code P101E mean?

The code P101E indicates a high-voltage issue with the Glow Plug Control Module Temperature Sensor 3 circuit, which monitors engine temperature for efficient operation in diesel engines.

2. What are the symptoms of a P101E code?

Common symptoms include difficulty starting the engine in cold weather, reduced engine performance, and the check engine light being illuminated.

3. What causes the P101E code?

Potential causes include a faulty temperature sensor, damaged wiring or connectors in the sensor circuit, or a malfunctioning glow plug control module.

4. Can I drive with a P101E code?

While you can drive with this code, it may lead to poor cold starts and reduced fuel efficiency. Prolonged driving without repairs could cause further engine issues.

5. How is the P101E code diagnosed?

A technician will use a scan tool to confirm the code, inspect the wiring and connectors, test the temperature sensor, and check the glow plug control module for faults.

6. How do I fix the P101E code?

Repairs may involve replacing the temperature sensor, repairing damaged wiring or connectors, or replacing the glow plug control module if it's defective.

7. How much does it cost to fix a P101E code?

Repair costs vary, but replacing the temperature sensor typically costs $100–$300, depending on labor rates and the vehicle model.

8. Can a P101E code cause engine damage?

While the code itself may not directly cause damage, ignoring it could lead to inefficient operation and potential long-term engine strain.

9. What tools are needed to fix a P101E code?

Basic tools include a multimeter for testing voltage, a scan tool for reading codes, and possibly replacement parts like a temperature sensor or wiring.

10. Can I repair the P101E code myself?

If you have experience with automotive diagnostics and repairs, you can attempt to fix it by inspecting the wiring and replacing the sensor. For complex issues, professional help is recommended.

Discuss the causes and fixes for P101E OBDII Code

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