P0119 2016 GMC Sierra Code - Engine Coolant Temperature Circuit Intermittent
Quick Answer
The Engine Coolant Temperature (ECT) sensor is a variable resistor that measures the temperature of the engine coolant. Common causes include Low engine coolant level, Leaking or stuck open thermostat, Faulty Engine Coolant Temperature (ECT) sensor. 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
- P0119 2016 GMC Sierra indicates Engine Coolant Temperature Circuit Intermittent.
- Common causes
- Common causes include Low engine coolant level, Leaking or stuck open thermostat, Faulty Engine Coolant Temperature (ECT) sensor.
- 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.
Code P0119 2016 GMC Sierra Description
The ECM uses this high side coolant rationality diagnostic to determine if the input from the ECT sensor is skewed warmer than normal. The internal clock of the ECM will record the amount of time the ignition is OFF. If the calibrated ignition OFF time is met at start-up, the ECM will compare the temperature difference between the ECT and the intake air temperature (IAT) to determine if the temperatures are within an acceptable operating range of each other. The Diagnostic Trouble Code (DTC) will be set when the ECM detects a the ECT is Intermittent for greater than 3 s.
What are the Possible Causes of the DTC P0119 2016 GMC Sierra?
- Low engine coolant level
- Leaking or stuck open thermostat
- Faulty Engine Coolant Temperature (ECT) sensor
- Engine Coolant Temperature sensor harness is open or shorted
- Engine Coolant Temperature sensor electrical circuit poor connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0119 2016 GMC Sierra?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0119 2016 GMC Sierra code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the P0119 2016 GMC Sierra code?
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Frequently Asked Questions about P0119 2016 GMC Sierra Code
1. What does the OBDII code P0119 mean on a 2016 GMC Sierra?
P0119 indicates an intermittent issue with the engine coolant temperature (ECT) sensor circuit, which monitors the temperature of the engine coolant.
2. What are common symptoms of the P0119 code in a GMC Sierra?
Symptoms may include poor fuel efficiency, rough idle, engine overheating, difficulty starting the engine, or the temperature gauge displaying erratic readings.
3. What causes the P0119 code on a 2016 GMC Sierra?
Common causes include a faulty ECT sensor, damaged wiring or connectors, corrosion in the sensor circuit, or issues with the engine control module (ECM).
4. Can driving with the P0119 code cause damage to the engine?
Yes, driving with this code may lead to engine overheating or inefficient combustion, which can cause long-term damage to the engine.
5. How can I troubleshoot the P0119 code on my GMC Sierra?
Start by inspecting the ECT sensor and its wiring for damage or corrosion, checking the coolant level, and testing the sensor’s resistance with a multimeter.
6. Does the P0119 code affect vehicle performance?
Yes, an intermittent ECT sensor signal can result in suboptimal engine temperature management, affecting fuel economy and overall performance.
7. How do I fix the P0119 code on a 2016 GMC Sierra?
Repairs may include replacing the ECT sensor, repairing or replacing damaged wiring, cleaning corroded connectors, or updating the ECM software.
8. Is the P0119 code related to the thermostat on a GMC Sierra?
While the thermostat controls coolant flow, it is not directly related to this code. However, a malfunctioning thermostat can indirectly affect the ECT readings.
9. How much does it cost to repair the P0119 code on a GMC Sierra?
Repair costs vary but typically range from $150 to $300, depending on whether the issue is with the ECT sensor, wiring, or other related components.
10. Can I clear the P0119 code without fixing the issue?
Clearing the code without addressing the underlying problem may result in the code returning and potential engine performance issues.
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