AutoCodes – Chevrolet – P101B 2014 Chevrolet Silverado

P101B 2014 Chevrolet Silverado Code - Glow Plug Control Module Temperature Sensor 2 Circuit Low Voltage

Quick Answer

The Glow Plug Control Module (GPCM) has the ability to perform internal diagnostics for the temperature sensor circuit. Common causes include Faulty Glow Plug Control Module (GPCM), Glow Plug Control Module harness is open or shorted, Glow Plug Control Module circuit poor electrical connection. 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: P101B 2014 Chevrolet Silverado indicates Glow Plug Control Module Temperature Sensor 2 Circuit Low Voltage.
Common causes: Common causes include Faulty Glow Plug Control Module (GPCM), Glow Plug Control Module harness is open or shorted, Glow Plug Control Module circuit poor electrical connection.
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.

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Code Popularity 243

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Oct 01, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P101B 2014 Chevrolet Silverado Description

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.

OBDII Code P101B 2014 Chevrolet Silverado - Glow Plug Control Module Temperature Sensor 2 Circuit Low Voltage - AutoCodes.com — P101B 2014 Chevrolet Silverado Code - Glow Plug Control Module Temperature Sensor 2 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P101B 2014 Chevrolet Silverado?

Faulty Glow Plug Control Module (GPCM)
Glow Plug Control Module harness is open or shorted
Glow Plug Control Module circuit poor electrical connection

How to Fix the DTC P101B 2014 Chevrolet Silverado?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P101B 2014 Chevrolet Silverado code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P101B 2014 Chevrolet Silverado code?

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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 P101B 2014 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P101B in a 2014 Chevrolet Silverado?

- Common symptoms include rough idling, poor engine performance, decreased fuel efficiency, and in some cases, the vehicle may enter limp mode.

2. What does the Glow Plug Control Module Temperature Sensor 2 Circuit Low Voltage code P101B indicate in a 2014 Chevrolet Silverado?

- The code indicates that there is a low voltage condition detected in the circuit related to the temperature sensor for the glow plug control module.

3. What are the possible causes of OBDII code P101B in a 2014 Chevrolet Silverado?

- Possible causes may include a faulty glow plug control module temperature sensor, damaged wiring or connectors, a malfunctioning glow plug control module, or a problem with the vehicle's electrical system.

4. How can I diagnose the Glow Plug Control Module Temperature Sensor 2 Circuit Low Voltage code P101B in my 2014 Chevrolet Silverado?

- Diagnosis typically involves using a scan tool to retrieve the specific fault code, testing the temperature sensor and related circuits for continuity and proper voltage, and inspecting the wiring and connectors for any damage.

5. Can I continue driving my 2014 Chevrolet Silverado with OBDII code P101B active?

- It is not recommended to continue driving with this code active, as it can lead to further engine damage and potential safety issues. It is best to address the underlying problem promptly.

6. How can I repair OBDII code P101B in my 2014 Chevrolet Silverado?

- Repair usually involves replacing the faulty glow plug control module temperature sensor, repairing any damaged wiring or connectors, or replacing the glow plug control module if necessary.

7. Is it possible to reset OBDII code P101B in a 2014 Chevrolet Silverado without fixing the underlying issue?

- While you can clear the code using a scan tool, it will likely reappear until the underlying problem is addressed. It's important to fix the root cause to prevent further issues.

8. Are there any preventive maintenance steps to avoid OBDII code P101B in a 2014 Chevrolet Silverado?

- Regularly inspecting the glow plug system, including the temperature sensor and related components, can help catch any potential issues early and prevent the code from appearing.

9. Can extreme weather conditions affect the occurrence of OBDII code P101B in a 2014 Chevrolet Silverado?

- Yes, extreme cold or hot weather can sometimes put additional stress on the glow plug system, leading to potential failures or malfunctions that trigger this code.

10. How long does it typically take to repair OBDII code P101B in a 2014 Chevrolet Silverado?

- The repair time can vary depending on the exact cause of the issue and the availability of parts. It can range from a quick sensor replacement to a more involved glow plug control module replacement, taking a few hours to complete.