AutoCodes – Chevrolet – P16AE Chevrolet

P16AE Chevrolet 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 Chevrolet 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 1,535

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

What does this mean?

What are the Possible Causes of the DTC P16AE Chevrolet?

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 Chevrolet?

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 Chevrolet 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 Chevrolet code?

Need more information on how to fix the P16AE Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

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Information for Specific Chevrolet Models

P16AE 2014 Chevrolet Silverado — Glow Plug Control Module Temperature Sensor Circuit High Voltage
P16AE 2015 Chevrolet Silverado — Glow Plug Control Module Temperature Sensor Circuit High Voltage
P16AE 2016 Chevrolet Silverado — Glow Plug Control Module Temperature Sensor Circuit High Voltage
P16AE 2017 Chevrolet Silverado — Glow Plug Control Module Temperature Sensor Circuit High Voltage
P16AE 2018 Chevrolet Silverado — Glow Plug Control Module Temperature Sensor Circuit High Voltage

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 Chevrolet Code

1. What does the OBDII code P16AE mean in a Chevrolet vehicle?

The code P16AE indicates a high voltage issue in the Glow Plug Control Module Temperature Sensor Circuit, which monitors and regulates the temperature of the glow plugs.

2. What are the common symptoms of the P16AE code?

Symptoms may include difficulty starting the engine in cold weather, a check engine light, reduced engine performance, or rough idling.

3. What causes the P16AE code in a Chevrolet?

Possible causes include a faulty Glow Plug Control Module, damaged temperature sensor, corroded or loose electrical connections, or wiring issues in the circuit.

4. Can I drive my Chevrolet with the P16AE code active?

While the vehicle may still be drivable, ignoring the code could lead to starting issues, especially in cold weather, and may cause further damage to the glow plug system.

5. How do I fix the P16AE code on my Chevrolet?

Repairs may involve replacing the Glow Plug Control Module, fixing damaged wiring or connectors, or replacing the temperature sensor if it's faulty.

6. How is the P16AE code diagnosed?

A mechanic will use a scan tool to confirm the code, inspect the Glow Plug Control Module and its temperature sensor, and check for wiring or connector issues in the circuit.

7. What tools are needed to repair a P16AE code?

Youâ€™ll need an OBDII scanner, a multimeter for voltage testing, and basic tools for inspecting and replacing components like the Glow Plug Control Module or temperature sensor.

8. How much does it cost to fix the P16AE code?

Repair costs vary but may range from $150 to $500 depending on whether the issue is with the sensor, module, or wiring.

9. Can the P16AE code reappear after repairs?

Yes, if the underlying cause isnâ€™t fully addressed, such as unresolved wiring issues or a faulty replacement part, the code may return.

10. Is the Glow Plug Control Module the same as the temperature sensor?

No, the Glow Plug Control Module manages the operation of the glow plugs, while the temperature sensor specifically monitors the module's temperature and feeds data to the control system.