Engine-Codes - Generic - P101C

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

- Code Popularity: 1,082 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
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What are the Possible Causes of the DTC P101C?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Glow Plug Control Module (GPCM)
  • Glow Plug Control Module harness is open or shorted
  • Glow Plug Control Module circuit poor electrical connection
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How to Fix the DTC P101C?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P101C code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

What Does the P101C Code Mean?

The Glow Plug Control Module (GPCM) has the ability to perform internal diagnostics for the temperature sensor circuit. The GPCM monitors the internal temperature sensor voltage and if the voltage is less than 0.21 V or greater than 4.94 V. The GPCM will send a message to the Engine Control Module (ECM) to set the appropriate Diagnostic Trouble Code (DTC). A DTC is detected when one of the GPCM temperature sensors voltage falls outside the calibrated threshold for greater than 1.3 s.

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

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Code P101C Information for Specific Makes

  • P101C Buick Glow Plug Control Module Temperature Sensor 2 Circuit High Voltage  📷
  • P101C Cadillac Glow Plug Control Module Temperature Sensor 2 Circuit High Voltage  📷
  • P101C Chevrolet Glow Plug Control Module Temperature Sensor 2 Circuit High Voltage  📷
  • P101C GMC Glow Plug Control Module Temperature Sensor 2 Circuit High Voltage  📷

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