AutoCodes – GMC – P02E5 GMC

P02E5 GMC Code - Intake Air Flow Valve Stuck Closed

Quick Answer

The intake airflow valve is a throttle plate actuator and is used to achieve high exhaust gas recirculation rates. Common causes include Faulty Throttle Body Assembly, Throttle Body Assembly harness is open or shorted, Throttle Body Assembly 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: P02E5 GMC indicates Intake Air Flow Valve Stuck Closed.
Common causes: Common causes include Faulty Throttle Body Assembly, Throttle Body Assembly harness is open or shorted, Throttle Body Assembly 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 386

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 Jun 09, 2022

Description
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
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Code P02E5 GMC Description

The intake airflow valve is a throttle plate actuator and is used to achieve high exhaust gas recirculation rates. It increases the pressure difference between exhaust and intake so that the appropriate exhaust quantity can be mixed with the intake air. The intake airflow valve contains a contactless inductive throttle position sensing element that is managed by a customized integrated circuit. The throttle position sensor is mounted within the valve assembly and is not serviceable. The Engine Control Module (ECM) supplies the valve assembly with a 5 V reference circuit, a low reference circuit, an H-bridge motor directional control circuit, and an asynchronous signal/serial data circuit. The asynchronous signal means communication is only going from the valve assembly to the ECM. The valve assembly cannot receive data from the ECM over the signal/serial data circuit. The throttle position sensor provides a signal that changes relative to the throttle blade angle. The throttle position sensor information is transmitted between the valve assembly and the ECM on the signal/serial data circuit. The ECM decodes the serial data signal into separate voltages which are displayed on a scan tool as the voltage inputs from TP sensors 1 and 2. The Diagnostic Trouble Code (DTC) will be set when the Throttle Position is less than 90%.

OBDII Code P02E5 GMC - Intake Air Flow Valve Stuck Closed - AutoCodes.com — P02E5 GMC Code - Intake Air Flow Valve Stuck Closed

What does this mean?

What are the Possible Causes of the DTC P02E5 GMC?

Faulty Throttle Body Assembly
Throttle Body Assembly harness is open or shorted
Throttle Body Assembly circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P02E5 GMC?

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 does this mean?

Code Tech Notes

User Submitted Video

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P02E5 GMC 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 P02E5 GMC code?

Need more information on how to fix the P02E5 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P02E5 GMC code diagnosed by a professional: Find a repair shop in your area

Information for Specific GMC Models

P02E5 2014 GMC Sierra — Intake Air Flow Valve Stuck Closed
P02E5 2015 GMC Sierra — Intake Air Flow Valve Stuck Closed
P02E5 2016 GMC Sierra — Intake Air Flow Valve Stuck Closed
P02E5 2017 GMC Sierra — Intake Air Flow Valve Stuck Closed
P02E5 2018 GMC Sierra — Intake Air Flow Valve Stuck Closed

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 P02E5 GMC Code

1. What does the OBDII code P02E5 mean on a GMC vehicle?

P02E5 indicates that the intake air flow valve is stuck in the closed position, which can interfere with proper air intake and engine performance.

2. What are the common symptoms of code P02E5 in a GMC?

Symptoms may include reduced engine power, poor acceleration, rough idling, increased fuel consumption, and the illumination of the check engine light.

3. What causes the intake air flow valve to get stuck closed?

Common causes include carbon buildup on the valve, a faulty intake air flow valve actuator, wiring or electrical issues, or a malfunctioning engine control module (ECM).

4. Can I drive my GMC with a P02E5 code?

Driving with a P02E5 code is not recommended, as it can negatively affect engine performance and efficiency, potentially leading to further damage if ignored.

5. How do I diagnose the P02E5 code on my GMC?

Diagnose by using an OBDII scanner, inspecting the intake air flow valve for carbon buildup or mechanical issues, checking the valve actuator, and testing the related wiring and connectors.

6. How is the P02E5 code fixed on a GMC?

Repairs may involve cleaning or replacing the intake air flow valve, repairing damaged wiring or connectors, replacing the actuator, or updating/reprogramming the ECM if necessary.

7. How much does it cost to repair a P02E5 code on a GMC?

The cost varies depending on the root cause but typically ranges from $100 to $500, including parts and labor for cleaning or replacing the valve or actuator.

8. Can I fix the P02E5 code myself?

If you have basic automotive knowledge, you can try cleaning the intake air flow valve and inspecting wiring. However, more complex repairs may require professional assistance.

9. What tools do I need to address the P02E5 code?

You may need an OBDII scanner, basic hand tools, a multimeter for electrical testing, and a throttle body cleaner if cleaning the valve is necessary.

10. How can I prevent the P02E5 code from occurring again?

Regular maintenance, including cleaning the intake system and ensuring proper air filter replacement intervals, can help prevent carbon buildup and keep the intake air flow valve functioning properly.