P00E9 2018 GMC Sierra Code - Intake Air Temperature Sensor 3 Circuit Performance
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
- P00E9 2018 GMC Sierra indicates Intake Air Temperature Sensor 3 Circuit Performance.
- 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 P00E9 2018 GMC Sierra Description
What are the Possible Causes of the DTC P00E9 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 P00E9 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 P00E9 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 P00E9 2018 GMC Sierra Code
What does the OBDII code P00E9 mean on a 2018 GMC Sierra?
The P00E9 code indicates a performance issue with the Intake Air Temperature Sensor 3 circuit, signaling that the sensor's readings are outside the expected range.
What are the symptoms of a P00E9 code in a GMC Sierra?
Symptoms may include poor engine performance, decreased fuel efficiency, rough idling, hesitation during acceleration, or an illuminated check engine light.
What causes the P00E9 code to appear?
Common causes include a faulty intake air temperature sensor 3, damaged or corroded wiring or connectors, or issues with the engine control module (ECM).
Can a dirty air filter trigger the P00E9 code?
A dirty air filter generally won’t cause this code directly but can contribute to poor airflow, indirectly affecting the intake air temperature sensor's performance.
How do you diagnose the P00E9 code on a 2018 GMC Sierra?
Diagnosis involves inspecting the sensor, checking for damaged wiring or loose connections, and using a scan tool to monitor live data for inconsistencies in the sensor readings.
Can you drive with the P00E9 code active?
It’s possible to drive with this code, but doing so may result in reduced performance, lower fuel efficiency, and potential long-term damage to the engine.
How do you fix the P00E9 code on a GMC Sierra?
Repairs may include replacing the intake air temperature sensor 3, repairing damaged wiring, cleaning corroded connectors, or reprogramming the ECM if needed.
Where is Intake Air Temperature Sensor 3 located on a 2018 GMC Sierra?
The Intake Air Temperature Sensor 3 is typically located near the intake manifold or within the air intake system, depending on the engine configuration.
Does the P00E9 code require ECM replacement?
ECM replacement is rarely needed and should only be considered after ruling out sensor and wiring issues.
How much does it cost to fix the P00E9 code on a GMC Sierra?
Repair costs can vary but typically range from $100 to $300, depending on whether the sensor, wiring, or other components need replacement.
Discuss the causes and fixes for P00E9 2018 GMC Sierra OBDII Code
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