P02E3 2018 GMC Sierra Code - Intake Air Flow Valve Control Circuit High Voltage
Quick Answer
The P02E3 diagnostic trouble code (DTC) on a 2018 GMC Sierra indicates a problem with the intake air flow valve control circuit registering high voltage. Common causes include Faulty Intake Air Flow Valve: A defective intake air flow valve can cause high voltage in the control circuit, Wiring or Connector Issues: Damaged or corroded wiring or connectors in the control circuit can disrupt the flow of electrical current, Malfunctioning Engine Control Module (ECM): A faulty ECM can send incorrect signals to the intake air flow valve control circuit, leading to high voltage readings. 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
- P02E3 2018 GMC Sierra indicates Intake Air Flow Valve Control Circuit High Voltage.
- Common causes
- Common causes include Faulty Intake Air Flow Valve: A defective intake air flow valve can cause high voltage in the control circuit, Wiring or Connector Issues: Damaged or corroded wiring or connectors in the control circuit can disrupt the flow of electrical current, Malfunctioning Engine Control Module (ECM): A faulty ECM can send incorrect signals to the intake air flow valve control circuit, leading to high voltage readings.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P02E3 2018 GMC Sierra Description
The P02E3 diagnostic trouble code (DTC) on a 2018 GMC Sierra indicates a problem with the intake air flow valve control circuit registering high voltage. This code typically points to an issue with the intake air flow control system, which plays a crucial role in regulating the amount of air entering the engine for combustion. The intake air flow valve controls the flow of air into the engine, ensuring the proper air-fuel mixture for combustion. When the control circuit detects high voltage, it means that there is an abnormal amount of electrical current flowing through the system, which can disrupt the proper functioning of the intake air flow valve.
Common Causes of P02E3 2018 GMC Sierra
- Faulty Intake Air Flow Valve: A defective intake air flow valve can cause high voltage in the control circuit.
- Wiring or Connector Issues: Damaged or corroded wiring or connectors in the control circuit can disrupt the flow of electrical current.
- Malfunctioning Engine Control Module (ECM): A faulty ECM can send incorrect signals to the intake air flow valve control circuit, leading to high voltage readings.
- Sensor Malfunction: A malfunctioning air flow sensor can provide inaccurate data to the ECM, causing high voltage in the control circuit.
Symptoms of P02E3 2018 GMC Sierra
- Check Engine Light: The most common symptom associated with this code is the illumination of the check engine light on the vehicle's dashboard.
- Reduced Engine Performance: The engine may experience reduced power output, hesitation, or rough idling due to incorrect air-fuel ratios.
- Increased Fuel Consumption: A malfunctioning intake air flow valve control circuit can lead to increased fuel consumption as the engine struggles to maintain the proper air-fuel mixture.
- Emission Issues: High voltage in the intake air flow valve control circuit can result in higher emissions output, potentially causing the vehicle to fail emissions tests.
How to Fix P02E3 2018 GMC Sierra
- Diagnose the Issue: Use a diagnostic scanner to retrieve the DTC and perform a thorough inspection of the intake air flow valve, wiring, connectors, and ECM to identify the root cause of the high voltage condition.
- Replace Intake Air Flow Valve: If the intake air flow valve is found to be faulty, replace it with a new, OEM-quality part.
- Repair Wiring or Connectors: Repair or replace any damaged wiring or connectors in the control circuit to ensure proper electrical flow.
- Test ECM: Test the ECM to determine if it is functioning correctly and replace it if necessary.
- Clear DTC and Test Drive: Clear the DTC from the vehicle's memory, reset the ECM, and test drive the vehicle to ensure that the issue has been resolved and that the check engine light does not reappear.
Cost to Fix P02E3 2018 GMC Sierra
The typical repair costs for addressing a P02E3 code on a 2018 GMC Sierra can vary depending on the specific cause of the issue. In general, replacing the intake air flow valve can cost between $200 and $500, while repairing wiring or connectors may range from $100 to $300. Testing and potentially replacing the ECM can add an additional $300 to $800 to the total repair cost. Overall, the total repair cost for this issue could range from $500 to $1600, including parts and labor. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for more accurate estimates.
Need more information about the P02E3 2018 GMC Sierra code?
Need more information on how to fix the P02E3 2018 GMC Sierra code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P02E3 2018 GMC Sierra code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P02E3 2018 GMC Sierra Code
No Frequently Asked Questions about P02E3 2018 GMC Sierra Code found.
Discuss the causes and fixes for P02E3 2018 GMC Sierra OBDII Code
Code P02E3 2018 GMC Sierra comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.