AutoCodes – GMC – P02E1 2016 GMC Sierra

P02E1 2016 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 2016 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 168

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 Jun 09, 2022

Description
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
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Code P02E1 2016 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 2016 GMC Sierra - Intake Air Flow Valve Control Performance - AutoCodes.com — P02E1 2016 GMC Sierra Code - Intake Air Flow Valve Control Performance

What does this mean?

What are the Possible Causes of the DTC P02E1 2016 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 2016 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 2016 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 2016 GMC Sierra Code

1. What does OBDII code P02E1 mean for a 2016 GMC Sierra?

Code P02E1 indicates an issue with the intake air flow valve control performance, meaning the valve is not functioning as expected to regulate airflow into the engine.

2. What are the common symptoms of code P02E1 on a 2016 GMC Sierra?

Symptoms may include reduced engine performance, poor fuel efficiency, rough idling, and the Check Engine Light illuminated.

3. What causes P02E1 to trigger on a 2016 GMC Sierra?

Possible causes include a malfunctioning intake air flow valve, wiring issues, a faulty sensor, or excessive carbon buildup affecting valve movement.

4. Can driving with code P02E1 cause damage to my 2016 GMC Sierra?

Driving with this code for an extended period can lead to engine performance issues and potentially cause damage if the airflow imbalance persists.

5. How do I diagnose P02E1 on a 2016 GMC Sierra?

Use a scan tool to confirm the code. Inspect the intake air flow valve, wiring, and connectors for damage or wear. Check for carbon buildup inside the valve.

6. How can I fix code P02E1 on a 2016 GMC Sierra?

Repairs may include cleaning or replacing the intake air flow valve, repairing damaged wiring, or replacing a faulty sensor.

7. How much does it cost to repair code P02E1 on a 2016 GMC Sierra?

Repair costs vary depending on the issue, ranging from $150-$500 for parts and labor, depending on whether cleaning or replacement is needed.

8. Can I clean the intake air flow valve to fix P02E1?

Yes, cleaning the valve can resolve the issue if carbon buildup is the cause, but if the valve is damaged, replacement may be necessary.

9. What tools are needed to fix code P02E1 on a 2016 GMC Sierra?

You may need a scan tool, basic hand tools, and cleaning supplies like intake cleaner or a wire brush for carbon buildup.

10. Can a dirty air filter cause code P02E1 on a 2016 GMC Sierra?

While unlikely, a severely clogged air filter can affect airflow and contribute to issues with the intake air flow valve. Make sure to inspect and replace the air filter if needed.