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Engine-Codes – GMC – P101E GMC

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

Quick Answer

The P101E diagnostic trouble code (DTC) for GMC vehicles specifically refers to an issue with the Glow Plug Control Module Temperature Sensor 3 Circuit registering high voltage. Common causes include Faulty glow plug control module temperature sensor, Wiring issues or shorts in the temperature sensor circuit, Corrosion or damage to sensor connectors. 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 GMC indicates Glow Plug Control Module Temperature Sensor 3 Circuit High Voltage.
Common causes
Common causes include Faulty glow plug control module temperature sensor, Wiring issues or shorts in the temperature sensor circuit, Corrosion or damage to sensor connectors.
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 17, 2024
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Code P101E GMC Description

The P101E diagnostic trouble code (DTC) for GMC vehicles specifically refers to an issue with the Glow Plug Control Module Temperature Sensor 3 Circuit registering high voltage. The glow plug control module is a crucial component in diesel engines, responsible for heating the glow plugs to aid in cold starting. The temperature sensor 3 circuit is designed to monitor the temperature of the glow plug control module and ensure it operates within the specified range. When the sensor detects high voltage, it triggers the P101E code, indicating a potential problem with the temperature sensor circuit.

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

Common Causes of P101E GMC

  1. Faulty glow plug control module temperature sensor.
  2. Wiring issues or shorts in the temperature sensor circuit.
  3. Corrosion or damage to sensor connectors.
  4. Malfunctioning glow plug control module.
  5. Electrical system issues affecting the sensor circuit.

Symptoms of P101E GMC

  1. Difficulty starting the engine, especially in cold weather.
  2. Reduced engine performance or power output.
  3. Illumination of the check engine light on the dashboard.
  4. Increased fuel consumption.
  5. Engine misfires or rough idling.

How to Fix P101E GMC

  1. Begin by conducting a thorough diagnostic scan to confirm the P101E code and identify the specific component causing the high voltage reading.
  2. Inspect the wiring and connectors associated with the temperature sensor circuit for any signs of damage, corrosion, or loose connections.
  3. Test the glow plug control module temperature sensor using a multimeter to determine if it is functioning within the specified parameters.
  4. Replace the faulty temperature sensor or glow plug control module if necessary, ensuring proper installation and connection.
  5. Clear the DTC and perform a test drive to verify that the issue has been resolved and the code does not reappear.

Cost to Fix P101E GMC

The typical repair costs for addressing a P101E code related to the Glow Plug Control Module Temperature Sensor 3 Circuit High Voltage can vary depending on the specific cause of the issue and the vehicle's make and model. In general, the cost of parts such as a new temperature sensor or glow plug control module can range from $50 to $200. Labor costs at auto repair shops typically range from $80 to $150 per hour, with the total repair bill likely falling between $150 and $500. It is advisable to consult with a trusted mechanic or dealership to obtain a more accurate estimate based on your vehicle's requirements and local labor rates.

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Information for Specific GMC 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 P101E GMC Code

1. What are the common symptoms of OBDII code P101E GMC related to the Glow Plug Control Module Temperature Sensor 3 Circuit High Voltage?

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

2. What can cause the Glow Plug Control Module Temperature Sensor 3 Circuit High Voltage code P101E GMC to trigger?

- Potential causes include a faulty temperature sensor, damaged wiring or connectors, issues with the glow plug control module, or a problem with the engine control module.

3. How can I diagnose the issue causing OBDII code P101E GMC to appear?

- To diagnose the problem, you can use an OBDII scanner to read the code, inspect the wiring and connectors for damage, test the temperature sensor for proper function, and check the glow plug control module.

4. Is it safe to continue driving with OBDII code P101E GMC active?

- It is not recommended to continue driving with the code active, as it can lead to further engine damage and decreased performance. It is best to address the issue promptly.

5. Can I repair OBDII code P101E GMC related to the Glow Plug Control Module Temperature Sensor 3 Circuit High Voltage myself?

- Depending on your expertise, you may be able to repair the issue yourself by replacing the temperature sensor, repairing damaged wiring, or addressing any other identified problems. However, professional assistance may be needed for more complex issues.

6. What are some tips for preventing OBDII code P101E GMC from reoccurring?

- Regular maintenance, such as checking the glow plug system, monitoring sensor performance, and addressing any issues promptly, can help prevent the code from reoccurring.

7. How much does it typically cost to repair OBDII code P101E GMC associated with the Glow Plug Control Module Temperature Sensor 3 Circuit High Voltage?

- The cost of repair can vary depending on the specific issue and the labor rates of the service provider. Costs may include parts replacement, diagnostic fees, and labor charges.

8. Can a faulty Glow Plug Control Module Temperature Sensor 3 Circuit High Voltage cause other issues in the vehicle?

- Yes, a faulty sensor can lead to performance issues, decreased fuel efficiency, increased emissions, and potential damage to other engine components if left unresolved.

9. Are there any recalls or technical service bulletins related to OBDII code P101E GMC?

- It is advisable to check with the manufacturer or a certified dealership for any recalls or technical service bulletins related to this specific OBDII code to ensure all relevant information is considered during the repair process.

10. How long does it typically take to repair OBDII code P101E GMC related to the Glow Plug Control Module Temperature Sensor 3 Circuit High Voltage?

- The repair time can vary depending on the extent of the issue, availability of parts, and the expertise of the technician. It is recommended to consult with a professional for a more accurate estimate of the repair duration.

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