P0114 2018 GMC Sierra Code - Intake Air Temperature Circuit Intermittent
Quick Answer
The intake air temperature (IAT) sensor 1 is a variable resistor that measures the temperature of the air in the sensor bore. Common causes include Dirty air filter, Faulty Intake Air Temperature (IAT) Sensor, Intake Air Temperature Sensor harness is open or shorted. 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
- P0114 2018 GMC Sierra indicates Intake Air Temperature Circuit Intermittent.
- Common causes
- Common causes include Dirty air filter, Faulty Intake Air Temperature (IAT) Sensor, Intake Air Temperature Sensor harness is open or shorted.
- 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 P0114 2018 GMC Sierra Description
What are the Possible Causes of the DTC P0114 2018 GMC Sierra?
- Dirty air filter
- Faulty Intake Air Temperature (IAT) Sensor
- Intake Air Temperature Sensor harness is open or shorted
- Intake Air Temperature Sensor circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0114 2018 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 P0114 2018 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 P0114 2018 GMC Sierra Code
1. What does the OBDII code P0114 mean on a 2018 GMC Sierra?
P0114 indicates an intermittent issue with the Intake Air Temperature (IAT) sensor circuit, meaning the sensor is sending inconsistent or erratic signals to the engine control module (ECM).
2. What are the symptoms of code P0114 in a 2018 GMC Sierra?
Common symptoms include poor fuel efficiency, rough idling, hesitation during acceleration, and in some cases, the check engine light turning on.
3. What causes the P0114 code in a GMC Sierra?
Potential causes include a faulty IAT sensor, damaged wiring or connections to the sensor, a dirty air filter, or a malfunctioning ECM.
4. Can I still drive my 2018 GMC Sierra with a P0114 code?
While the vehicle may remain drivable, ignoring this code can lead to reduced performance and fuel efficiency. It's best to diagnose and fix the issue promptly.
5. How do I troubleshoot the P0114 code?
Start by inspecting the IAT sensor and its wiring for damage or loose connections. Check the air filter for clogs and use a diagnostic tool to monitor the IAT sensor's live data for erratic readings.
6. Where is the IAT sensor located in a 2018 GMC Sierra?
The IAT sensor is usually located on the intake manifold or integrated into the mass airflow (MAF) sensor near the air filter housing.
7. How do I fix the P0114 code on my GMC Sierra?
Repairs may include replacing a faulty IAT sensor, repairing damaged wiring, cleaning or replacing the air filter, or updating/replacing the ECM if necessary.
8. How much does it cost to fix a P0114 code on a 2018 GMC Sierra?
The cost depends on the root cause. Replacing an IAT sensor typically costs $50–$200, while wiring repairs or ECM replacements may vary significantly.
9. Can a dirty air filter cause a P0114 code?
Yes, a clogged or dirty air filter can disrupt airflow to the IAT sensor, causing erratic readings and triggering the code.
10. Do I need to clear the P0114 code after repairs?
Yes, after fixing the issue, use an OBDII scanner to clear the code. Monitor the system to ensure the code does not return.
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