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P16AE Chevrolet Code - Glow Plug Control Module Temperature Sensor Circuit High Voltage

Quick Answer

The P16AE diagnostic trouble code for Chevrolet vehicles indicates a problem with the Glow Plug Control Module Temperature Sensor Circuit registering high voltage. Common causes include Malfunctioning temperature sensor, Damaged wiring or connectors in the circuit, Faulty glow plug control module. 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 Malfunctioning temperature sensor, Damaged wiring or connectors in the circuit, Faulty glow plug control module.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 14, 2024
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Code P16AE Chevrolet Description

The P16AE diagnostic trouble code for Chevrolet vehicles indicates a problem with the Glow Plug Control Module Temperature Sensor Circuit registering high voltage. The glow plug control module is a crucial component in diesel engines, responsible for heating the glow plugs to aid in cold starting. The temperature sensor within the module monitors the temperature to ensure optimal performance. When the sensor detects a high voltage in the circuit, it triggers the P16AE code.

OBDII Code P16AE Chevrolet - Glow Plug Control Module Temperature Sensor Circuit High Voltage
P16AE Chevrolet Code - Glow Plug Control Module Temperature Sensor Circuit High Voltage

Common Causes of P16AE Chevrolet

  1. Malfunctioning temperature sensor.
  2. Damaged wiring or connectors in the circuit.
  3. Faulty glow plug control module.
  4. ECM communication issues.
  5. Corrosion or moisture affecting the components.

Symptoms of P16AE Chevrolet

  1. Extended cranking times before the engine starts.
  2. Engine misfires or rough idling.
  3. Decreased fuel efficiency.
  4. Illumination of the check engine light.
  5. Difficulty starting the engine, especially in cold weather.

How to Fix P16AE Chevrolet

  1. Begin by conducting a thorough diagnostic scan to confirm the P16AE code and pinpoint the exact cause of the high voltage in the temperature sensor circuit.
  2. Inspect the wiring and connectors for any damage, corrosion, or loose connections. Repair or replace as necessary.
  3. Test the temperature sensor for proper functionality. Replace if found to be faulty.
  4. Check the glow plug control module for any defects or malfunctions. Replace if needed.
  5. Clear the trouble code from the ECM memory and perform a test drive to ensure the issue has been resolved.

Cost to Fix P16AE Chevrolet

The typical repair costs for addressing the P16AE code in a Chevrolet vehicle can range from $200 to $500, including parts and labor. However, it's important to note that specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Most auto repair shops charge between $80 and $150 per hour for labor, but rates may be higher in metropolitan areas or at dealerships, while independent shops may offer lower rates. For a more accurate estimate, it's recommended to inquire with local auto repair facilities.

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Information for Specific Chevrolet Models

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?

You’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 isn’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.

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