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P02E1 2014 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 2014 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 203
How popular is this code, among other codes? Low
What is this?
Table of contents Created and updated by William Orellana on Jun 09, 2022
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Code P02E1 2014 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 2014 GMC Sierra - Intake Air Flow Valve Control Performance - AutoCodes.com
P02E1 2014 GMC Sierra Code - Intake Air Flow Valve Control Performance
What does this mean?

What are the Possible Causes of the DTC P02E1 2014 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 2014 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 2014 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 P02E1 2014 GMC Sierra 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 P02E1 2014 GMC Sierra Code

What does the OBDII code P02E1 mean for a 2014 GMC Sierra?

Code P02E1 indicates an issue with the Intake Air Flow Valve Control Performance, meaning the valve is not operating as expected to regulate airflow into the engine.

What are the common symptoms of the P02E1 code in a 2014 GMC Sierra?

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

What causes the P02E1 code in a 2014 GMC Sierra?

Common causes include a malfunctioning intake air flow valve, wiring issues, a faulty sensor, or carbon buildup restricting valve movement.

Can I drive my 2014 GMC Sierra with the P02E1 code?

Driving with this code is not recommended as it can lead to reduced performance, higher emissions, and potential engine damage over time.

How do I diagnose the P02E1 code in a 2014 GMC Sierra?

Start by inspecting the intake air flow valve for damage or debris, check the wiring and connectors for faults, and use a scan tool to monitor sensor readings.

What tools are needed to fix the P02E1 code on a 2014 GMC Sierra?

You may need a scan tool, multimeter, basic hand tools, and possibly cleaning supplies to remove carbon buildup from the valve.

How do you fix the P02E1 code on a 2014 GMC Sierra?

Repairs may include cleaning the intake air flow valve, replacing damaged wiring or connectors, or replacing the valve itself if it’s faulty.

What is the cost of repairing the P02E1 code on a 2014 GMC Sierra?

Repair costs can vary, but cleaning the valve may cost under $100, while valve replacement could range between $200-$500 including labor.

Does the P02E1 code require a software update for the 2014 GMC Sierra?

In some cases, a software update may be needed if the issue is related to incorrect airflow calibration by the engine control module.

How can I prevent the P02E1 code from occurring again on my 2014 GMC Sierra?

Regular maintenance, including cleaning the intake system and checking for wiring issues, can help prevent this code from reappearing.

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