Engine-CodesChevrolet – P16AE 2018 Chevrolet Silverado

P16AE 2018 Chevrolet Silverado Code - Glow Plug Control Module Temperature Sensor Circuit High Voltage

Quick Answer

The P16AE diagnostic trouble code (DTC) for a 2018 Chevrolet Silverado indicates a problem with the Glow Plug Control Module Temperature Sensor Circuit registering high voltage. Common causes include Faulty glow plug control module temperature sensor, Wiring or connection issues in the temperature sensor circuit, Corrosion or damage to the sensor or its connectors. 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 temperature sensor, Wiring or connection issues in the temperature sensor circuit, Corrosion or damage to the sensor or its connectors.
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.
Table of contents Created and updated by William Orellana on Sep 13, 2024
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Code P16AE 2018 Chevrolet Silverado Description

The P16AE diagnostic trouble code (DTC) for a 2018 Chevrolet Silverado indicates a problem with the Glow Plug Control Module Temperature Sensor Circuit registering high voltage. The glow plug control module is responsible for managing the glow plugs in a diesel engine, which are essential for starting the engine in cold conditions. The temperature sensor within the module detects the temperature of the glow plug system and adjusts the voltage accordingly. When the sensor circuit reports high voltage, it means that the temperature readings are outside of the expected range.

OBDII Code P16AE 2018 Chevrolet Silverado - Glow Plug Control Module Temperature Sensor Circuit High Voltage
P16AE 2018 Chevrolet Silverado Code - Glow Plug Control Module Temperature Sensor Circuit High Voltage

Common Causes of P16AE 2018 Chevrolet Silverado

  1. Faulty glow plug control module temperature sensor.
  2. Wiring or connection issues in the temperature sensor circuit.
  3. Corrosion or damage to the sensor or its connectors.
  4. Electrical issues within the glow plug control module.
  5. Software or programming issues related to the sensor circuit.

Symptoms of P16AE 2018 Chevrolet Silverado

  1. Difficulty starting the engine, especially in cold weather.
  2. Rough idling or misfires upon startup.
  3. Decreased fuel efficiency.
  4. Illumination of the check engine light.
  5. Reduced engine performance.

How to Fix P16AE 2018 Chevrolet Silverado

  1. Begin by diagnosing the specific cause of the high voltage reading using a scan tool to access the vehicle's onboard diagnostic system.
  2. Inspect the glow plug control module temperature sensor and its wiring for any visible damage or corrosion.
  3. Test the sensor's resistance and voltage output to determine if it is functioning within the manufacturer's specifications.
  4. Replace the temperature sensor if it is found to be faulty, ensuring proper installation and connection.
  5. Clear the DTC and test the vehicle to verify that the issue has been resolved.

Cost to Fix P16AE 2018 Chevrolet Silverado

The cost of repairing a Glow Plug Control Module Temperature Sensor Circuit High Voltage issue can vary depending on the specific cause of the problem and the labor rates in your area. Generally, replacing the temperature sensor itself can range from $100 to $300, including parts and labor. However, additional costs may apply if other components need to be replaced or if extensive diagnostic work is required. It's recommended to consult with a qualified mechanic or dealership to get an accurate estimate based on your vehicle's make and model. Keep in mind that labor rates can vary between different repair shops, so it's advisable to shop around for the best deal.

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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.

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