P00EA 2018 GMC Sierra Code - Intake Air Temperature Sensor 3 Circuit Low Voltage
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
- P00EA 2018 GMC Sierra indicates Intake Air Temperature Sensor 3 Circuit Low Voltage.
- 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 P00EA 2018 GMC Sierra Description
What are the Possible Causes of the DTC P00EA 2018 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 P00EA 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 P00EA 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 P00EA 2018 GMC Sierra Code
1. What does the OBDII code P00EA mean on a 2018 GMC Sierra?
P00EA indicates that the Intake Air Temperature (IAT) Sensor 3 circuit is experiencing low voltage, meaning the sensor is not sending the correct electrical signal to the Engine Control Module (ECM).
2. What are the symptoms of code P00EA on a 2018 GMC Sierra?
Common symptoms include poor engine performance, reduced fuel efficiency, rough idling, and the Check Engine Light being illuminated.
3. What causes the P00EA code on a 2018 GMC Sierra?
Possible causes include a faulty IAT Sensor 3, damaged or corroded wiring, a bad ECM connection, or a short or open circuit in the sensor wiring.
4. Can I drive my 2018 GMC Sierra with the P00EA code?
Driving with this code is possible, but it is not recommended as it may result in poor engine performance, reduced fuel economy, and potential damage to other components over time.
5. How do I fix the P00EA code on my 2018 GMC Sierra?
Repairs may include replacing the IAT Sensor 3, repairing damaged wiring or connectors, and clearing the code after verifying the issue is resolved.
6. How do I locate the Intake Air Temperature Sensor 3 on my 2018 GMC Sierra?
The IAT Sensor 3 is typically located in the intake manifold or air intake system, often near the throttle body or the air filter housing.
7. How much does it cost to fix the P00EA code on a 2018 GMC Sierra?
Repair costs vary but typically range from $100 to $300, depending on whether the issue is with the sensor, wiring, or connectors.
8. Can a dirty air filter cause the P00EA code on a 2018 GMC Sierra?
A dirty air filter alone is unlikely to cause this code, but it can contribute to airflow issues that may exacerbate sensor problems.
9. How do I test the IAT Sensor 3 on my 2018 GMC Sierra?
You can test the sensor using a multimeter to check for proper voltage and resistance readings as specified in the vehicle's service manual.
10. Will clearing the P00EA code with a scanner fix the problem?
Clearing the code may turn off the Check Engine Light temporarily, but the issue will likely return if the underlying problem is not addressed.
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