AutoCodes – Chevrolet – P16AE 2018 Chevrolet Silverado

P16AE 2018 Chevrolet Silverado Code - Glow Plug Control Module Temperature Sensor Circuit High 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: P16AE 2018 Chevrolet Silverado indicates Glow Plug Control Module Temperature Sensor Circuit High 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 225

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 P16AE 2018 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 P16AE 2018 Chevrolet Silverado - Glow Plug Control Module Temperature Sensor Circuit High Voltage - AutoCodes.com — P16AE 2018 Chevrolet Silverado Code - Glow Plug Control Module Temperature Sensor Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P16AE 2018 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 P16AE 2018 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 P16AE 2018 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 P16AE 2018 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 P16AE 2018 Chevrolet Silverado Code

1. What does the OBDII code P16AE mean on a 2018 Chevrolet Silverado?

The code P16AE indicates a high voltage issue in the Glow Plug Control Module Temperature Sensor Circuit, which monitors and regulates the glow plug system's operation.

2. What are the common symptoms of a P16AE code on a 2018 Chevrolet Silverado?

Symptoms may include the check engine light turning on, difficulty starting the engine in cold weather, reduced engine performance, or erratic glow plug operation.

3. What causes the P16AE code on a 2018 Chevrolet Silverado?

Common causes include a faulty glow plug control module, damaged temperature sensor, wiring issues such as frayed or shorted wires, or a bad electrical connection in the circuit.

4. Can I still drive my 2018 Chevrolet Silverado with a P16AE code?

While the vehicle may still be drivable, ignoring the issue can lead to harder cold starts, reduced fuel efficiency, or further damage to the glow plug system.

5. How do you diagnose the P16AE code on a 2018 Chevrolet Silverado?

Diagnosis involves using a scan tool to confirm the code, inspecting the glow plug control module, checking the temperature sensor, and testing the circuit wiring for shorts, opens, or high resistance.

6. How can I fix the P16AE code on my 2018 Chevrolet Silverado?

Repairs may include replacing the glow plug control module or temperature sensor, repairing or replacing damaged wiring, and cleaning or securing electrical connections.

7. How much does it cost to fix a P16AE code on a 2018 Chevrolet Silverado?

The repair cost depends on the exact issue but could range from $100 to $500, depending on whether the sensor, module, or wiring needs to be replaced.

8. Can a failing glow plug control module cause the P16AE code?

Yes, a failing or damaged glow plug control module can result in a high voltage issue and trigger the P16AE code.

9. Is the P16AE code specific to diesel engines on the 2018 Chevrolet Silverado?

Yes, the P16AE code is specific to diesel engines, as it relates to the glow plug system used to aid cold weather starts in diesel vehicles.

10. Do I need special tools to fix the P16AE code on a 2018 Chevrolet Silverado?

Yes, you may need a scan tool to read and clear the code, a multimeter to test the circuit, and possibly specialized tools to replace the glow plug control module or temperature sensor.