P16AD 2017 GMC Sierra Code - Glow Plug Control Module Temperature Sensor Circuit Low Voltage
Quick Answer
The P16AD diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates an issue with the Glow Plug Control Module Temperature Sensor Circuit registering low voltage. Common causes include Faulty temperature sensor, Wiring issues such as a short or open circuit, Malfunctioning 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
- P16AD 2017 GMC Sierra indicates Glow Plug Control Module Temperature Sensor Circuit Low Voltage.
- Common causes
- Common causes include Faulty temperature sensor, Wiring issues such as a short or open circuit, Malfunctioning 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.
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Code P16AD 2017 GMC Sierra Description
The P16AD diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates an issue with the Glow Plug Control Module Temperature Sensor Circuit registering low voltage. The glow plug control module is responsible for managing the glow plugs in a diesel engine, which are essential for cold starts by preheating the combustion chamber. The temperature sensor circuit monitors the temperature of the glow plug control module to ensure optimal performance.
Common Causes of P16AD 2017 GMC Sierra
- Faulty temperature sensor
- Wiring issues such as a short or open circuit
- Malfunctioning glow plug control module
- Corrosion or poor connections in the sensor circuit
- Electrical issues such as a blown fuse or relay
Symptoms of P16AD 2017 GMC Sierra
- Difficulty starting the engine, especially in cold weather
- Rough idling or misfires
- Decreased fuel efficiency
- Increased emissions
- Illumination of the check engine light
How to Fix P16AD 2017 GMC Sierra
- Diagnose the issue by using a scan tool to retrieve the DTC and inspecting the temperature sensor circuit for any visible damage.
- Test the temperature sensor for proper resistance and voltage readings to determine if it is functioning correctly.
- Check the wiring harness for any breaks, corrosion, or loose connections, repairing or replacing as needed.
- Inspect the glow plug control module for any signs of damage or malfunction, replacing if necessary.
- Clear the DTC and test the vehicle to ensure the issue has been resolved.
Cost to Fix P16AD 2017 GMC Sierra
The typical repair costs for addressing a P16AD code on a 2017 GMC Sierra can vary depending on the specific cause of the issue. Parts such as a new temperature sensor or glow plug control module can range from $50 to $200 each, while labor costs can add another $100 to $300. Overall, the total repair cost could range from $200 to $700 or more, depending on the extent of the repairs needed. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate.
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