AutoCodes – Chevrolet – P00EC Chevrolet

P00EC Chevrolet 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 Chevrolet 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.

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Code Popularity 1,482

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on May 17, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P00EC Chevrolet Description

The Intake Air Temperature (IAT) Sensor 3 is a variable resistor that changes an Engine Control Module (ECM) supplied 5 V signal. The signal varies with intake manifold air temperature and is displayed by the scan tool as °C (°F). The IAT sensor 3 is integrated with the Manifold Absolute Pressure Sensor in the intake manifold. The ECM provides a ground for the IAT sensor 3 low reference circuit. The Diagnostic Trouble Code (DTC) will be set when the ECM detects that the IAT sensor 3 signal is intermittent or has abruptly changed for at least 5 s.

OBDII Code P00EC Chevrolet - Intake Air Temperature Sensor 3 Circuit Erratic - AutoCodes.com — P00EC Chevrolet Code - Intake Air Temperature Sensor 3 Circuit Erratic

What does this mean?

What are the Possible Causes of the DTC P00EC Chevrolet?

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 Chevrolet?

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 Chevrolet 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 P00EC Chevrolet code?

Need more information on how to fix the P00EC Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P00EC Chevrolet code diagnosed by a professional: Find a repair shop in your area

Information for Specific Chevrolet Models

P00EC 2014 Chevrolet Silverado — Intake Air Temperature Sensor 3 Circuit Erratic
P00EC 2015 Chevrolet Silverado — Intake Air Temperature Sensor 3 Circuit Erratic
P00EC 2016 Chevrolet Silverado — Intake Air Temperature Sensor 3 Circuit Erratic
P00EC 2017 Chevrolet Silverado — Intake Air Temperature Sensor 3 Circuit Erratic
P00EC 2018 Chevrolet Silverado — Intake Air Temperature Sensor 3 Circuit Erratic

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P00EC Chevrolet Code

1. What are the common symptoms of OBDII code P00EC (Intake Air Temperature Sensor 3 Circuit Erratic) in a Chevrolet?

The common symptoms of this code may include rough idling, decreased fuel efficiency, hesitation or stalling during acceleration, and an illuminated check engine light.

2. What could be the possible causes of OBDII code P00EC in a Chevrolet?

Possible causes of this code include a faulty intake air temperature sensor, wiring issues in the sensor circuit, a loose or corroded connector, or a problem with the Engine Control Module (ECM).

3. How can I diagnose OBDII code P00EC related to the Intake Air Temperature Sensor 3 Circuit Erratic in my Chevrolet?

Diagnosing this code typically involves using an OBDII scanner to read the trouble codes, inspecting the intake air temperature sensor and its wiring, checking for loose connections, and testing the sensor's resistance and voltage.

4. Can a dirty air filter cause OBDII code P00EC to trigger in a Chevrolet?

A dirty air filter itself is unlikely to directly cause this specific code. However, a severely dirty air filter can affect the air-to-fuel ratio and engine performance, possibly leading to related issues that trigger the code.

5. How should I repair OBDII code P00EC on my Chevrolet due to an Intake Air Temperature Sensor 3 Circuit Erratic issue?

Repairing this code typically involves replacing the faulty intake air temperature sensor, repairing or replacing damaged wiring or connectors, and clearing the trouble codes with an OBDII scanner.

6. Is it safe to continue driving my Chevrolet with OBDII code P00EC triggered?

If your vehicle is exhibiting symptoms such as rough idling or stalling, it is not recommended to continue driving with this code triggered. Get the issue diagnosed and repaired promptly to prevent potential damage to the engine.

7. Can I reset OBDII code P00EC in my Chevrolet without fixing the underlying issue?

Resetting the code without addressing the underlying problem will only temporarily turn off the check engine light. The issue causing the code will persist, potentially leading to further engine performance problems.

8. How much does it typically cost to repair OBDII code P00EC related to the Intake Air Temperature Sensor 3 Circuit Erratic in a Chevrolet?

The cost of repairing this code can vary depending on the specific issue, labor rates, and parts required. Generally, the repair cost may range from $100 to $300, including parts and labor.

9. Can a DIY enthusiast with basic automotive knowledge fix OBDII code P00EC in a Chevrolet?

Depending on the exact cause, a DIY enthusiast with basic automotive knowledge may be able to address this code by replacing the intake air temperature sensor or fixing wiring issues. However, more complex issues may require professional help.

10. How long does it take to repair OBDII code P00EC related to the Intake Air Temperature Sensor 3 Circuit Erratic in a Chevrolet?

The repair time for this code can vary based on the specific issue and the expertise of the person performing the repair. In general, it may take anywhere from 30 minutes to a few hours to diagnose and fix the problem.