AutoCodes – GMC – P00E9 2015 GMC Sierra

P00E9 2015 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 2015 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.

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Code Popularity 179

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

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

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
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Code P00E9 2015 GMC Sierra 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 determines the absolute difference between IAT sensor 1 start-up temperature and the IAT sensor 2 start-up temperature that is not at factory specifications.

OBDII Code P00E9 2015 GMC Sierra - Intake Air Temperature Sensor 3 Circuit Performance - AutoCodes.com — P00E9 2015 GMC Sierra Code - Intake Air Temperature Sensor 3 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P00E9 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 P00E9 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 P00E9 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.

Need more information about the P00E9 2015 GMC Sierra code?

Need more information on how to fix the P00E9 2015 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 P00E9 2015 GMC Sierra Code

1. What does the OBDII code P00E9 mean on a 2015 GMC Sierra?

P00E9 indicates an issue with the Intake Air Temperature (IAT) Sensor 3 Circuit Performance, meaning the sensor is not operating within the expected range.

2. What are the common symptoms of code P00E9 on a 2015 GMC Sierra?

Symptoms may include reduced engine performance, poor fuel efficiency, hard starting, or an illuminated check engine light.

3. What causes the P00E9 code on a 2015 GMC Sierra?

Common causes include a faulty IAT sensor, damaged wiring or connectors in the circuit, or a malfunctioning PCM (Powertrain Control Module).

4. Can I drive my 2015 GMC Sierra with a P00E9 code?

While the vehicle may still be drivable, it's not recommended as it could lead to reduced performance and potential damage to the engine or emissions systems.

5. How do I fix a P00E9 code on my 2015 GMC Sierra?

Repairs may involve replacing the faulty IAT sensor, repairing or replacing damaged wiring, or reprogramming or replacing the PCM if necessary.

6. Where is the IAT Sensor 3 located on a 2015 GMC Sierra?

The IAT Sensor 3 is typically located in the intake manifold or air intake tubing, but you should consult the vehicle's service manual for the exact location.

7. How can I test the IAT Sensor 3 on my 2015 GMC Sierra?

You can test the sensor using a multimeter to check for proper resistance and voltage readings as specified in the service manual.

8. What tools do I need to diagnose the P00E9 code on a 2015 GMC Sierra?

Youâ€™ll need an OBDII scanner, a multimeter, and possibly a wiring diagram for the intake air temperature circuit.

9. Is it expensive to fix the P00E9 code on a 2015 GMC Sierra?

The cost can vary depending on the issue, ranging from an inexpensive sensor replacement to potentially more costly PCM repairs.

10. Can a dirty air filter cause the P00E9 code on a 2015 GMC Sierra?

While unlikely, a severely clogged air filter could disrupt airflow and indirectly affect the IAT sensor readings. Inspect and replace the air filter if necessary.