AutoCodes – GMC – P02E1 2017 GMC Sierra

P02E1 2017 GMC Sierra Code - Intake Air Flow Valve Control Performance

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: P02E1 2017 GMC Sierra indicates Intake Air Flow Valve Control Performance.
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 182

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 P02E1 2017 GMC Sierra 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 desired Throttle Position and the actual Throttle Position is greater than 10%.

OBDII Code P02E1 2017 GMC Sierra - Intake Air Flow Valve Control Performance - AutoCodes.com — P02E1 2017 GMC Sierra Code - Intake Air Flow Valve Control Performance

What does this mean?

What are the Possible Causes of the DTC P02E1 2017 GMC Sierra?

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 P02E1 2017 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 does this mean?

Code Tech Notes

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P02E1 2017 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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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 P02E1 2017 GMC Sierra Code

What does the OBDII code P02E1 mean on a 2017 GMC Sierra?

The code P02E1 indicates an issue with the intake air flow valve control, specifically related to its performance or operation.

What are common symptoms of the P02E1 code on a 2017 GMC Sierra?

Symptoms may include reduced engine performance, poor fuel efficiency, rough idling, or the check engine light turning on.

What causes the P02E1 code on a 2017 GMC Sierra?

Possible causes include a faulty intake air flow valve, wiring issues, connector problems, or debris obstructing the valve's operation.

Can a dirty intake air flow valve cause the P02E1 code?

Yes, debris or carbon buildup on the intake air flow valve can interfere with its performance and trigger the P02E1 code.

How do you diagnose the P02E1 code on a 2017 GMC Sierra?

Diagnosis involves inspecting the intake air flow valve, checking for wiring or connector damage, and verifying the valve's operation using a scan tool.

Is it safe to drive a 2017 GMC Sierra with the P02E1 code?

While the vehicle may still be drivable, ignoring the code can lead to reduced engine performance and worsen fuel efficiency.

How much does it cost to repair the P02E1 code on a 2017 GMC Sierra?

Repair costs vary but may range from $100 to $500, depending on whether the valve needs cleaning, repair, or replacement.

Can a software update fix the P02E1 code on a 2017 GMC Sierra?

In rare cases, a software update may resolve the issue if the problem is related to incorrect programming of the intake air flow valve control.

What tools are needed to fix the P02E1 code on a 2017 GMC Sierra?

You'll need an OBDII scanner, basic hand tools, and possibly a cleaning solution or replacement valve, depending on the diagnosis.

How can I prevent the P02E1 code from reoccurring on my 2017 GMC Sierra?

Regular maintenance, such as cleaning the intake system and ensuring wiring is intact, can help prevent future problems with the intake air flow valve.