P00EC 2015 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 2015 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 2015 GMC Sierra Description
What are the Possible Causes of the DTC P00EC 2015 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 2015 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 2015 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 2015 GMC Sierra Code
1. What does the OBDII code P00EC mean on a 2015 GMC Sierra?
P00EC indicates an "Intake Air Temperature Sensor 3 Circuit Erratic," meaning the sensor is providing inconsistent or erratic readings to the engine control module (ECM).
2. What are the symptoms of code P00EC on a 2015 GMC Sierra?
Symptoms may include poor engine performance, decreased fuel efficiency, rough idling, difficulty starting, or the check engine light being illuminated.
3. What causes the P00EC code on a 2015 GMC Sierra?
Common causes include a faulty intake air temperature (IAT) sensor, damaged or corroded wiring, loose connections in the sensor circuit, or a malfunctioning ECM.
4. How do I diagnose the P00EC code on my 2015 GMC Sierra?
Start by using a scan tool to check the live data from the IAT sensor. Inspect the wiring and connectors for damage or corrosion, and test the sensor with a multimeter to ensure it is functioning correctly.
5. Can I drive my 2015 GMC Sierra with the P00EC code?
While the vehicle may still be drivable, driving with this code can lead to poor performance, reduced fuel economy, and potential long-term engine damage if not addressed promptly.
6. How do I fix the P00EC code on a 2015 GMC Sierra?
Repairs might include replacing a faulty IAT sensor, repairing or replacing damaged wiring, cleaning corroded connections, or reprogramming/updating the ECM if needed.
7. Where is the Intake Air Temperature Sensor 3 located on a 2015 GMC Sierra?
The IAT Sensor 3 is typically located in the intake manifold or integrated into the mass airflow (MAF) sensor. Refer to your vehicle’s service manual for the exact location.
8. How much does it cost to repair the P00EC code on a 2015 GMC Sierra?
The cost can vary, but replacing the IAT sensor might cost $50-$150 for parts, while labor costs depend on the shop's rates. Wiring repairs or ECM updates may increase the cost.
9. Can a dirty air filter cause the P00EC code on a 2015 GMC Sierra?
While unlikely to directly cause P00EC, a dirty air filter can impact airflow and sensor readings, so inspecting and replacing the air filter if needed is a good step.
10. Will clearing the P00EC code fix the issue?
Clearing the code with a scan tool will turn off the check engine light temporarily, but the issue will return unless the underlying problem with the IAT sensor or circuit is resolved.
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