AutoCodes – Chevrolet – P16AD 2015 Chevrolet Silverado

P16AD 2015 Chevrolet Silverado Code - Glow Plug Control Module Temperature Sensor 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: P16AD 2015 Chevrolet Silverado indicates Glow Plug Control Module Temperature Sensor 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 208

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 P16AD 2015 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 P16AD 2015 Chevrolet Silverado - Glow Plug Control Module Temperature Sensor Circuit Low Voltage - AutoCodes.com — P16AD 2015 Chevrolet Silverado Code - Glow Plug Control Module Temperature Sensor Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P16AD 2015 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 P16AD 2015 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 P16AD 2015 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 P16AD 2015 Chevrolet Silverado code?

Need more information on how to fix the P16AD 2015 Chevrolet Silverado code? Get Access to Factory Service Manuals

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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 P16AD 2015 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P16AD in a 2015 Chevrolet Silverado?

- Common symptoms include poor engine performance, rough idling, decreased fuel efficiency, and the illumination of the Check Engine Light.

2. What does the OBDII code P16AD indicating "Glow Plug Control Module Temperature Sensor Circuit Low Voltage" mean?

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

3. What are the possible causes of OBDII code P16AD in a 2015 Chevrolet Silverado?

- Possible causes include a faulty glow plug control module, a malfunctioning temperature sensor, damaged wiring or connectors in the circuit, or a low battery voltage condition.

4. How can I diagnose the OBDII code P16AD in my 2015 Chevrolet Silverado?

- Diagnosing this code typically involves checking the glow plug control module, testing the temperature sensor, inspecting the wiring and connectors for damage, and verifying battery voltage levels.

5. Can I continue to drive my 2015 Chevrolet Silverado with the OBDII code P16AD present?

- It is not recommended to continue driving with this code present, as it can lead to further engine issues and potential damage if left unresolved.

6. How can I repair OBDII code P16AD in my 2015 Chevrolet Silverado?

- Repairing this code may involve replacing the glow plug control module, replacing the temperature sensor, repairing damaged wiring or connectors, and clearing the code with a diagnostic tool.

7. Is it possible to reset the OBDII code P16AD in a 2015 Chevrolet Silverado without fixing the underlying issue?

- While you can clear the code temporarily, it is crucial to address the root cause to prevent the code from reoccurring and to ensure proper engine function.

8. Are there any preventive maintenance tips to avoid OBDII code P16AD in a 2015 Chevrolet Silverado?

- Regularly inspecting the glow plug control module, checking the condition of the temperature sensor, and maintaining the electrical system can help prevent this code from appearing.

9. How long does it typically take to repair OBDII code P16AD in a 2015 Chevrolet Silverado?

- The repair time can vary depending on the exact cause of the issue, but it may take a few hours to a day to diagnose and fix the problem properly.

10. Can a DIY enthusiast with automotive knowledge repair OBDII code P16AD in a 2015 Chevrolet Silverado?

- Depending on the DIY enthusiast's skill level and access to tools, they may be able to diagnose and repair this code themselves, but professional assistance is recommended for complex issues.