[SOLVED] P101D Code: Fix Low Voltage In Glow Plug Control Module Temperature Sensor 3

The automobile fault code P101D indicates a problem with the Glow Plug Control Module (GPCM). The most common symptom is the Engine Light being ON or the Service Engine Soon Warning Light.

The cause of this fault code can be a faulty GPCM, an open or shorted GPCM harness, or a poor electrical connection in the GPCM circuit. To fix this issue, you should visually inspect the wiring harness and connectors, checking for any damage or corrosion.

Additionally, look for any broken, bent, pushed out, or corroded pins in the connectors. The repair time for this issue is estimated to be around 1.0. It is important to address this fault code promptly to prevent further damage to the vehicle.

Repair Importance Level10.0 (Out of 10)
Estimated Repair TimeApproximately 1.0 hour
Repair Difficulty Level10.0 (Out of 10)

If you see the Engine Light ON or the Service Engine Soon Warning Light, it could be a sign of the p101d fault code.

  • The symptoms of the automobile fault code p101d include the Engine Light being ON or the Service Engine Soon Warning Light being illuminated.

The automobile fault code p101d can be caused by a faulty Glow Plug Control Module (GPCM), an open or shorted harness, or a poor electrical connection in the Glow Plug Control Module circuit.

  • The fault code P101D can be caused by the following: a faulty Glow Plug Control Module (GPCM), an open or shorted harness for the Glow Plug Control Module, and a poor electrical connection in the Glow Plug Control Module circuit.

To fix the p101d fault code, start by visually inspecting the wiring harness, connectors, and components for any damage or corrosion.

  • To fix the automobile fault code p101d, first, check the possible causes mentioned above.
  • Then, visually inspect the wiring harness and connectors related to the issue.
  • Look for any damaged components and check for broken, bent, pushed out, or corroded connector pins.
  • The estimated repair time for this fix is 1.0 hour.

The factors influencing the cost of diagnosing and fixing the automobile fault code p101d based on the estimated repair time of 1.0 hour include the hourly rate charged by auto repair shops, which typically ranges between $75 and $150.

The P101D fault code refers to the Glow Plug Control Module (GPCM) temperature sensor circuit. The GPCM is responsible for monitoring the voltage of the internal temperature sensor.

If the voltage is below 0.21 V or above 4.94 V, the GPCM will send a message to the Engine Control Module (ECM) to set the appropriate Diagnostic Trouble Code (DTC). The P101D code is triggered when the voltage of one of the GPCM temperature sensors falls outside the calibrated threshold for more than 1.3 seconds.

This indicates a low voltage condition in the Glow Plug Control Module Temperature Sensor 3 Circuit.

What are the possible causes for the automobile fault code P101D?

If you see the engine light or service engine soon warning light on, the fault code P101D could be the culprit. This code is often caused by a faulty Glow Plug Control Module (GPCM), an open or shorted GPCM harness, or a poor electrical connection in the GPCM circuit. To fix the issue, visually inspect the wiring harness and connectors, checking for any damage or corrosion. Also, be sure to look out for broken, bent, pushed out, or corroded connector pins.

How can I visually inspect the wiring harness and connectors to fix the P101D fault code?

To fix the P101D fault code, start by visually inspecting the wiring harness and connectors. Look for any damaged components and check if there are any broken, bent, pushed out, or corroded pins in the connectors. This can help identify if the Glow Plug Control Module (GPCM) is faulty or if there is an open or shorted circuit. Don’t forget to check the “Possible Causes” listed above for further troubleshooting.

What should I look for when checking for damaged components or corroded connector pins to resolve the P101D fault code?

When resolving the P101D fault code, start by visually inspecting the wiring harness and connectors. Look for any damaged components and check for broken, bent, pushed out, or corroded connector pins. These issues can cause a poor electrical connection or an open or shorted circuit in the Glow Plug Control Module (GPCM). By checking for these specific problems, you can effectively address the cause of the fault code and resolve the issue.

p101d error fault code explained

If you’re seeing the Engine Light ON or the Service Engine Soon Warning Light, it could be due to a faulty Glow Plug Control Module (GPCM), an open or shorted harness, or a poor electrical connection.

To fix it, visually inspect the wiring harness and connectors, check for damaged components, and look for any broken, bent, pushed out, or corroded pins on the connectors.

Scroll to Top