P0119 2014 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 2014 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 2014 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 2014 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 2014 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 2014 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.
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Frequently Asked Questions about P0119 2014 GMC Sierra Code
What does the OBDII code P0119 mean on a 2014 GMC Sierra?
P0119 indicates that the Engine Control Module (ECM) has detected intermittent or erratic signals from the Engine Coolant Temperature (ECT) sensor circuit.
What are the common symptoms of a P0119 code?
Symptoms may include erratic temperature gauge readings, engine overheating or running cooler than normal, poor fuel economy, and possible engine performance issues like stalling or rough idling.
What causes the P0119 code on a 2014 GMC Sierra?
Common causes include a faulty ECT sensor, damaged or corroded wiring or connectors, a stuck thermostat, or low coolant levels.
Can a P0119 code cause drivability issues?
Yes, it can cause drivability issues such as poor engine performance, hesitation, or difficulty starting, as the ECM relies on accurate temperature data for fuel and ignition adjustments.
How can I diagnose the P0119 code on my GMC Sierra?
Start by checking the coolant level and inspecting the ECT sensor and its wiring for damage or corrosion. Use a scan tool to monitor the sensor's readings and compare them to the actual engine temperature.
Can low coolant cause the P0119 code?
Yes, low coolant levels can lead to inaccurate temperature readings, which may trigger the P0119 code.
Is it safe to drive with a P0119 code?
Driving with this code is not recommended, as it can cause engine overheating or other performance issues if left unresolved.
How do I fix the P0119 code on my 2014 GMC Sierra?
Repairs typically involve replacing the ECT sensor, repairing damaged wiring or connectors, refilling coolant, or replacing a faulty thermostat if needed.
How much does it cost to fix a P0119 code?
Repair costs vary but typically range from $50 to $200, depending on whether the issue is with the sensor, wiring, or thermostat.
Can a failing thermostat cause the P0119 code?
Yes, a failing thermostat that is stuck open or closed can lead to erratic coolant temperature readings and trigger the P0119 code.
Discuss the causes and fixes for P0119 2014 GMC Sierra OBDII Code
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