P00EC 2014 GMC Sierra Code - Intake Air Temperature Sensor 3 Circuit Erratic
Quick Answer
The Intake Air Temperature (IAT) Sensor 3 is a variable resistor that changes an Engine Control Module (ECM) supplied 5 V signal. Common causes include Faulty Intake Air Temperature (IAT) Sensor 3 (Integrated with the Intake Manifold Pressure and Air Temperature Sensor), Intake Air Temperature Sensor 3 harness is open or shorted, Intake Air Temperature Sensor 3 circuit poor electrical connection. 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
- P00EC 2014 GMC Sierra indicates Intake Air Temperature Sensor 3 Circuit Erratic.
- Common causes
- Common causes include Faulty Intake Air Temperature (IAT) Sensor 3 (Integrated with the Intake Manifold Pressure and Air Temperature Sensor), Intake Air Temperature Sensor 3 harness is open or shorted, Intake Air Temperature Sensor 3 circuit poor electrical connection.
- 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 P00EC 2014 GMC Sierra Description
What are the Possible Causes of the DTC P00EC 2014 GMC Sierra?
- Faulty Intake Air Temperature (IAT) Sensor 3 (Integrated with the Intake Manifold Pressure and Air Temperature Sensor)
- Intake Air Temperature Sensor 3 harness is open or shorted
- Intake Air Temperature Sensor 3 circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P00EC 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 P00EC 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 P00EC 2014 GMC Sierra Code
1. What does the OBDII code P00EC mean on a 2014 GMC Sierra?
P00EC indicates an erratic signal from Intake Air Temperature Sensor 3, which monitors air entering the engine to optimize performance.
2. What are the common symptoms of a P00EC code?
Symptoms may include poor engine performance, reduced fuel efficiency, difficulty starting, or the check engine light turning on.
3. What causes the P00EC code to appear?
Common causes include a faulty Intake Air Temperature Sensor 3, damaged wiring or connectors, or issues with the powertrain control module (PCM).
4. Can a dirty air filter cause the P00EC code?
While unlikely, a severely clogged air filter can affect airflow and potentially contribute to sensor-related issues.
5. How do I diagnose the P00EC code?
Start by inspecting the wiring and connectors for damage or corrosion, then test the sensor's resistance with a multimeter to ensure it’s functioning within specifications.
6. Can I drive with the P00EC code active?
Driving with the P00EC code may be possible, but it’s not recommended as it can lead to reduced performance and potential engine damage over time.
7. How can I fix the P00EC code on my 2014 GMC Sierra?
Repairs may involve replacing the Intake Air Temperature Sensor 3, repairing or replacing damaged wiring, or reprogramming the PCM if necessary.
8. Where is Intake Air Temperature Sensor 3 located on a 2014 GMC Sierra?
It is typically located in the intake manifold or air intake duct, depending on the engine configuration.
9. How much does it cost to repair the P00EC code?
Repair costs can vary but generally range from $50 to $200, depending on whether the issue is with the sensor, wiring, or PCM.
10. Will clearing the P00EC code solve the problem?
Clearing the code without addressing the underlying issue will only temporarily turn off the check engine light, and the code is likely to return.
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