P101C 2017 Chevrolet Silverado Code - Glow Plug Control Module Temperature Sensor 2 Circuit High Voltage
Quick Answer
The P101C diagnostic trouble code (DTC) for a 2017 Chevrolet Silverado refers to a Glow Plug Control Module Temperature Sensor 2 Circuit High Voltage issue. Common causes include Faulty temperature sensor, Wiring issues or shorts in the 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
- P101C 2017 Chevrolet Silverado indicates Glow Plug Control Module Temperature Sensor 2 Circuit High Voltage.
- Common causes
- Common causes include Faulty temperature sensor, Wiring issues or shorts in the 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 P101C 2017 Chevrolet Silverado Description
The P101C diagnostic trouble code (DTC) for a 2017 Chevrolet Silverado refers to a Glow Plug Control Module Temperature Sensor 2 Circuit High Voltage issue. This code indicates that the temperature sensor in the glow plug control module is detecting a higher voltage than normal, which can lead to various performance issues in the vehicle. The glow plug control module is responsible for regulating the glow plugs in a diesel engine, which are essential for starting the engine, especially in cold weather conditions. The temperature sensor monitors the temperature of the glow plug control module to ensure it operates within the optimal range.
Common Causes of P101C 2017 Chevrolet Silverado
- Faulty temperature sensor.
- Wiring issues or shorts in the circuit.
- Malfunctioning glow plug control module.
- Corrosion or damage to electrical connections.
- Engine overheating causing high temperatures in the glow plug control module.
Symptoms of P101C 2017 Chevrolet Silverado
- Difficulty starting the engine, especially in cold weather.
- Reduced fuel efficiency.
- Increased emissions.
- Engine misfires.
- Illumination of the check engine light.
How to Fix P101C 2017 Chevrolet Silverado
- Diagnose the issue by using a scan tool to read the DTC and perform a visual inspection of the glow plug control module, temperature sensor, and related wiring.
- Test the temperature sensor and wiring for proper voltage and resistance readings.
- Replace the temperature sensor if it is faulty, ensuring proper installation and connection.
- Check and repair any damaged wiring or connections in the circuit.
- Clear the DTC and test the vehicle to ensure the issue has been resolved.
Cost to Fix P101C 2017 Chevrolet Silverado
The typical repair costs for addressing a Glow Plug Control Module Temperature Sensor 2 Circuit High Voltage issue can range from $200 to $500, including parts and labor. However, 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. It's recommended to inquire about local rates to obtain a more accurate estimate for this repair. Keep in mind that rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less.
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Frequently Asked Questions about P101C 2017 Chevrolet Silverado Code
What does the OBDII code P101C mean on a 2017 Chevrolet Silverado?
The code P101C indicates an issue with the Glow Plug Control Module Temperature Sensor 2 Circuit, specifically high voltage being detected.
What are common symptoms of code P101C in a 2017 Chevrolet Silverado?
Symptoms may include difficulty starting the engine in cold weather, a check engine light, reduced engine performance, or rough idling.
What causes the P101C code to appear?
Common causes include a faulty temperature sensor, damaged wiring or connectors in the circuit, or a malfunctioning glow plug control module.
How do I diagnose the P101C code?
Start by inspecting the wiring and connectors for damage or corrosion, test the temperature sensor for proper function, and verify voltage levels in the circuit using a multimeter.
Can I drive my 2017 Silverado with the P101C code?
While the truck may still be drivable, it could experience starting issues in cold weather. It’s best to address the issue promptly to prevent further damage.
How do I fix the P101C code?
Repairs may include replacing the faulty temperature sensor, repairing or replacing damaged wiring, or replacing the glow plug control module if necessary.
How much does it cost to fix the P101C code?
The cost depends on the specific issue, but replacing a temperature sensor typically costs $50–$150 for parts, plus labor.
Can a bad glow plug control module cause the P101C code?
Yes, a malfunctioning glow plug control module can contribute to this code if it fails to regulate the temperature sensor circuit correctly.
What tools do I need to troubleshoot the P101C code?
You’ll need a multimeter to test voltage, an OBDII scanner to confirm the code, and possibly a repair manual for wiring diagrams.
Does the P101C code affect emissions?
Indirectly, yes. If the engine struggles to start or runs inefficiently due to the fault, it could increase emissions over time.
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