P16AD GMC Code - Glow Plug Control Module Temperature Sensor Circuit Low Voltage
Quick Answer
The P16AD GMC diagnostic trouble code (DTC) refers to the Glow Plug Control Module Temperature Sensor Circuit Low Voltage. Common causes include Faulty temperature sensor in the glow plug control module, Damaged wiring or connections in the temperature sensor circuit, Corrosion or poor electrical connections. 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 GMC indicates Glow Plug Control Module Temperature Sensor Circuit Low Voltage.
- Common causes
- Common causes include Faulty temperature sensor in the glow plug control module, Damaged wiring or connections in the temperature sensor circuit, Corrosion or poor electrical connections.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P16AD GMC Description
The P16AD GMC diagnostic trouble code (DTC) refers to the Glow Plug Control Module Temperature Sensor Circuit Low Voltage. This code indicates that there is a problem with the temperature sensor circuit in the glow plug control module, which is responsible for monitoring the temperature of the glow plugs in a diesel engine. The glow plug control module plays a crucial role in the starting process of a diesel engine by heating up the glow plugs to aid in combustion when the engine is cold.
Common Causes of P16AD GMC
- Faulty temperature sensor in the glow plug control module.
- Damaged wiring or connections in the temperature sensor circuit.
- Corrosion or poor electrical connections.
- Issues with the glow plug control module itself.
- Engine computer communication errors.
Symptoms of P16AD GMC
- Difficulty starting the engine, especially in cold weather.
- Rough idling or engine misfires.
- Decreased fuel efficiency.
- Engine stalling.
How to Fix P16AD GMC
- Begin by conducting a thorough inspection of the glow plug control module and temperature sensor circuit to identify any visible damage or faults.
- Test the temperature sensor for proper functionality using a multimeter to check for resistance values within the manufacturer's specified range.
- Replace the temperature sensor if it is found to be faulty, ensuring the new sensor is compatible with the vehicle's make and model.
- Inspect and repair any damaged wiring or connections in the temperature sensor circuit.
- Clear the DTC from the vehicle's computer memory using a diagnostic scanner to reset the system and ensure the issue has been resolved.
Cost to Fix P16AD GMC
The typical repair costs for addressing a Glow Plug Control Module Temperature Sensor Circuit Low Voltage issue can range from $150 to $300, depending on the extent of the problem and the cost of parts and labor. It's important to note that diagnosis time and labor rates at auto repair shops can vary significantly, so it's advisable to check with local shops for a more accurate estimate based on your specific vehicle and location. Keep in mind that rates may be higher at dealerships or in metropolitan areas, while independent shops may offer more competitive pricing.
Need more information about the P16AD GMC code?
Need more information on how to fix the P16AD GMC code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P16AD GMC code diagnosed by a professional: Find a repair shop in your area
Information for Specific GMC Models
- P16AD 2014 GMC Sierra — Glow Plug Control Module Temperature Sensor Circuit Low Voltage
- P16AD 2015 GMC Sierra — Glow Plug Control Module Temperature Sensor Circuit Low Voltage
- P16AD 2016 GMC Sierra — Glow Plug Control Module Temperature Sensor Circuit Low Voltage
- P16AD 2017 GMC Sierra — Glow Plug Control Module Temperature Sensor Circuit Low Voltage
- P16AD 2018 GMC Sierra — Glow Plug Control Module Temperature Sensor Circuit Low Voltage
Frequently Asked Questions about P16AD GMC Code
1. What are the common symptoms of OBDII code P16AD GMC?
- Common symptoms include hard starting, rough idling, reduced engine performance, and the illumination of the check engine light.
2. What causes the Glow Plug Control Module Temperature Sensor Circuit Low Voltage fault code?
- This code is typically triggered by a malfunction in the glow plug control module temperature sensor or issues with the wiring and connectors associated with the sensor.
3. How can I diagnose the P16AD GMC code?
- Diagnosing this code involves inspecting the glow plug control module temperature sensor, checking the wiring for any damage, and testing the sensor's resistance and voltage readings.
4. Can a faulty glow plug cause the P16AD code to appear?
- While a faulty glow plug itself may not directly trigger this code, it can contribute to issues within the glow plug control module system that may lead to the appearance of the P16AD fault code.
5. What are the repair options for addressing the Glow Plug Control Module Temperature Sensor Circuit Low Voltage code?
- Repair options may include replacing the faulty temperature sensor, repairing or replacing damaged wiring and connectors, or resetting the fault code after addressing any underlying issues.
6. Is it safe to continue driving with the P16AD GMC fault code present?
- It is not recommended to continue driving with this fault code present, as it can lead to potential engine performance issues and further damage if left unaddressed.
7. How much does it typically cost to repair the Glow Plug Control Module Temperature Sensor Circuit Low Voltage issue?
- The cost of repair can vary depending on the extent of the problem and the specific components that need to be replaced. It is advisable to consult a professional mechanic for an accurate cost estimate.
8. Can I clear the P16AD code with an OBDII scanner, or does it require professional intervention?
- You can attempt to clear the P16AD code with an OBDII scanner, but it is important to address the underlying cause of the fault to prevent the code from reappearing.
9. Are there any preventive maintenance measures to avoid the P16AD fault code in the future?
- Regularly inspecting the glow plug control module system, including the temperature sensor and associated wiring, can help identify potential issues early and prevent the occurrence of the P16AD fault code.
10. Will the P16AD GMC code affect the vehicle's emissions or fuel efficiency?
- Yes, the P16AD fault code can impact emissions and fuel efficiency by causing the engine to run inefficiently and potentially emitting higher levels of pollutants.
Discuss the causes and fixes for P16AD GMC OBDII Code
Code P16AD GMC comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.