P101E 2018 GMC Sierra Code - Glow Plug Control Module Temperature Sensor 3 Circuit High Voltage
Quick Answer
The diagnostic trouble code P101E for a 2018 GMC Sierra refers to an issue with the Glow Plug Control Module Temperature Sensor 3 Circuit registering a high voltage. Common causes include Faulty glow plug control module temperature sensor, Damaged wiring or connections in the sensor circuit, Corrosion or poor connections in the sensor circuit. 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
- P101E 2018 GMC Sierra indicates Glow Plug Control Module Temperature Sensor 3 Circuit High Voltage.
- Common causes
- Common causes include Faulty glow plug control module temperature sensor, Damaged wiring or connections in the sensor circuit, Corrosion or poor connections in the sensor circuit.
- 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 P101E 2018 GMC Sierra Description
The diagnostic trouble code P101E for a 2018 GMC Sierra refers to an issue with the Glow Plug Control Module Temperature Sensor 3 Circuit registering a high voltage. The glow plug control module is a crucial component in diesel engines that helps in cold starts by heating the glow plugs. The temperature sensor is responsible for measuring the temperature of the module, ensuring it operates within the optimal range.
Common Causes of P101E 2018 GMC Sierra
- Faulty glow plug control module temperature sensor.
- Damaged wiring or connections in the sensor circuit.
- Corrosion or poor connections in the sensor circuit.
- Electrical issues in the vehicle's electrical system.
- Software or programming issues related to the glow plug control module.
Symptoms of P101E 2018 GMC Sierra
- Hard starting or failure to start the engine.
- Rough idling or misfiring.
- Decreased engine performance.
- Increased fuel consumption.
- Illumination of the check engine light.
How to Fix P101E 2018 GMC Sierra
- Begin by performing a visual inspection of the sensor wiring and connections to check for any visible damage or corrosion.
- Test the glow plug control module temperature sensor using a multimeter to determine if it is functioning correctly.
- If the sensor is faulty, replace it with a new one following the manufacturer's guidelines.
- Clear the trouble code from the vehicle's computer using a diagnostic scanner.
- Test the vehicle to ensure the issue has been resolved and that the engine starts and runs smoothly.
Cost to Fix P101E 2018 GMC Sierra
The typical cost to repair a Glow Plug Control Module Temperature Sensor 3 Circuit High Voltage issue can vary depending on the extent of the problem and the cost of parts and labor. On average, the repair for this type of issue can range from $200 to $500, including parts and labor. However, it's important to note that specific diagnosis time and labor rates at auto repair shops can vary, so it's advisable to obtain quotes from local shops for a more accurate estimate.
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Frequently Asked Questions about P101E 2018 GMC Sierra Code
What does the OBDII code P101E mean on a 2018 GMC Sierra?
P101E indicates an issue with the Glow Plug Control Module Temperature Sensor 3 Circuit, specifically detecting high voltage beyond the expected range.
What are the common symptoms of code P101E on a 2018 GMC Sierra?
Symptoms may include difficulty starting the engine in cold weather, poor engine performance, an illuminated check engine light, or reduced fuel efficiency.
What causes the P101E code to appear?
Potential causes include a faulty temperature sensor, damaged wiring or connectors in the Glow Plug Control Module circuit, or a malfunctioning Glow Plug Control Module itself.
Can I still drive my GMC Sierra with the P101E code?
While the vehicle may still be drivable, it could experience performance issues, particularly in cold weather. It’s best to address the issue promptly to avoid further complications.
How do I diagnose the P101E code?
Diagnosis involves inspecting the wiring and connectors for damage, testing the temperature sensor with a multimeter, and verifying the Glow Plug Control Module's functionality using a scan tool.
How can I fix the P101E code on my GMC Sierra?
Repairs may include replacing a faulty temperature sensor, repairing damaged wiring or connectors, or replacing the Glow Plug Control Module if it’s defective.
What tools are needed to troubleshoot the P101E code?
Common tools include a diagnostic scan tool, a multimeter for testing voltage and resistance, and possibly wiring repair supplies like connectors or heat shrink tubing.
How much does it cost to fix the P101E code?
The cost varies depending on the root cause. Replacing a temperature sensor typically costs $50-$150, while Glow Plug Control Module replacement could range from $200-$500, plus labor.
Could a dead battery cause the P101E code?
A dead or weak battery is unlikely to directly cause P101E but could exacerbate electrical issues, making it harder to diagnose or resolve the problem.
Is the P101E code covered under warranty for a 2018 GMC Sierra?
It depends on your warranty coverage. If the vehicle is still under the powertrain or emissions warranty, the repair may be covered. Check with your dealer for details.
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