P101D 2017 GMC Sierra Code - Glow Plug Control Module Temperature Sensor 3 Circuit Low Voltage
Quick Answer
The P101D diagnostic trouble code (DTC) for a 2017 GMC Sierra refers to the Glow Plug Control Module Temperature Sensor 3 Circuit Low Voltage. Common causes include Faulty temperature sensor, Wiring issues or a poor connection, 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
- P101D 2017 GMC Sierra indicates Glow Plug Control Module Temperature Sensor 3 Circuit Low Voltage.
- Common causes
- Common causes include Faulty temperature sensor, Wiring issues or a poor connection, 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 P101D 2017 GMC Sierra Description
The P101D diagnostic trouble code (DTC) for a 2017 GMC Sierra refers to the Glow Plug Control Module Temperature Sensor 3 Circuit Low Voltage. This code indicates that there is an issue with the temperature sensor for the glow plug control module, specifically sensor 3, which is reporting a lower voltage than expected. The glow plug control module is responsible for regulating the glow plugs in a diesel engine, which are essential for cold starting by preheating the combustion chamber. The temperature sensor helps monitor the temperature of the glow plug control module to ensure optimal performance.
Common Causes of P101D 2017 GMC Sierra
- Faulty temperature sensor.
- Wiring issues or a poor connection.
- Malfunctioning glow plug control module.
- Electrical system problems.
- Corrosion or damage to the sensor or module.
Symptoms of P101D 2017 GMC Sierra
- Difficulty starting the engine, especially in cold weather.
- Rough idling or misfires.
- Decreased fuel efficiency.
- Increased emissions.
- Check Engine Light illuminated on the dashboard.
How to Fix P101D 2017 GMC Sierra
- Begin by diagnosing the issue using a diagnostic scanner to retrieve the specific trouble code and pinpoint the problem area.
- Inspect the temperature sensor and wiring for any signs of damage, corrosion, or loose connections. Replace or repair as necessary.
- Test the glow plug control module to ensure it is functioning correctly. Replace if faulty.
- Clear the trouble code from the vehicle's computer system using the diagnostic scanner.
- Test the vehicle to ensure the issue has been resolved and that the glow plug system is operating properly.
Cost to Fix P101D 2017 GMC Sierra
The typical repair costs for addressing the Glow Plug Control Module Temperature Sensor 3 Circuit Low Voltage issue can range from $200 to $500, including parts and labor. However, it is essential 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 charge less. It is advisable to check local rates for a more accurate estimate.
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Frequently Asked Questions about P101D 2017 GMC Sierra Code
What does the OBDII code P101D mean for a 2017 GMC Sierra?
P101D indicates a low voltage issue in the Glow Plug Control Module Temperature Sensor 3 Circuit, which is responsible for monitoring engine temperature for proper glow plug operation.
What are common symptoms of the P101D code?
Symptoms may include difficulty starting the engine in cold weather, reduced fuel efficiency, a check engine light, and potentially rough idling.
What causes the P101D code to be triggered?
Common causes include a faulty temperature sensor, damaged or corroded wiring, a poor connection in the circuit, or a malfunctioning glow plug control module.
Can I continue driving my 2017 GMC Sierra with the P101D code?
While the vehicle may still be drivable, it’s not recommended to ignore the issue, as it can cause starting problems, especially in cold weather, and may lead to higher emissions.
How can I diagnose the P101D code on my GMC Sierra?
Use an OBDII scanner to confirm the code, then visually inspect the wiring and connectors for damage or corrosion. Test the temperature sensor and circuit with a multimeter to identify any faults.
How do I fix the P101D code?
Repairs may involve replacing the faulty temperature sensor, repairing or replacing damaged wiring, cleaning corroded connections, or replacing the glow plug control module if it’s defective.
How much does it cost to repair the P101D code?
The cost can vary depending on the specific repair but typically ranges from $100 to $300, factoring in parts and labor for sensor or wiring repairs.
Can a weak battery cause the P101D code?
Yes, a weak or failing battery can contribute to voltage issues in the circuit, potentially triggering the P101D code. Ensure the battery is in good condition.
Does the P101D code affect emissions?
Yes, the P101D code can lead to improper glow plug operation, which may cause incomplete combustion and increased emissions.
Can I clear the P101D code without making repairs?
Clearing the code without addressing the root cause may temporarily turn off the check engine light but is not a permanent fix. The code will likely return if the issue isn’t resolved.
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