P111E 2018 GMC Sierra Code - Engine Coolant Temperature Sensor Not Plausible
Quick Answer
The P111E diagnostic trouble code (DTC) for a 2018 GMC Sierra indicates that the Engine Coolant Temperature Sensor is not providing plausible data to the engine control module (ECM). Common causes include Faulty Engine Coolant Temperature Sensor, Wiring issues, Malfunctioning ECM. 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
- P111E 2018 GMC Sierra indicates Engine Coolant Temperature Sensor Not Plausible.
- Common causes
- Common causes include Faulty Engine Coolant Temperature Sensor, Wiring issues, Malfunctioning ECM.
- 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 P111E 2018 GMC Sierra Description
The P111E diagnostic trouble code (DTC) for a 2018 GMC Sierra indicates that the Engine Coolant Temperature Sensor is not providing plausible data to the engine control module (ECM). The Engine Coolant Temperature Sensor is a crucial component that measures the temperature of the engine coolant and sends this information to the ECM. This data is essential for the ECM to adjust fuel delivery, ignition timing, and other engine functions to ensure optimal performance and efficiency.
Common Causes of P111E 2018 GMC Sierra
- Faulty Engine Coolant Temperature Sensor
- Wiring issues
- Malfunctioning ECM
- Coolant temperature circuit problem
- Corrosion or poor connections in the sensor circuit
Symptoms of P111E 2018 GMC Sierra
- Poor fuel efficiency
- Rough idling
- Hesitation during acceleration
- Engine misfires
- Engine running too hot or too cold
How to Fix P111E 2018 GMC Sierra
- Begin by diagnosing the issue with a scan tool to confirm the P111E code and pinpoint the exact cause.
- Inspect the Engine Coolant Temperature Sensor and its wiring for any visible damage or corrosion.
- Test the sensor's resistance and voltage output to determine if it is functioning correctly.
- Replace the Engine Coolant Temperature Sensor if it is found to be faulty.
- Clear the DTC and perform a test drive to ensure the issue has been resolved.
Cost to Fix P111E 2018 GMC Sierra
The typical repair costs for addressing a P111E code on a 2018 GMC Sierra can vary depending on the exact cause of the issue. In general, replacing the Engine Coolant Temperature Sensor and addressing any wiring issues may cost between $100 and $300 for parts and labor. However, it is important 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. Auto repair shops commonly charge between $80 and $150 per hour for labor, with rates potentially higher in metropolitan areas or at dealerships, and lower at independent shops. It is advisable to check local rates for a more precise estimate.
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