AutoCodes – GMC – P02E8 2015 GMC Sierra

P02E8 2015 GMC Sierra Code - Diesel Intake Air Flow Position Sensor Circuit Low

Quick Answer

The Throttle Body Assembly contains a contact-less inductive throttle position sensing element that is managed by a customized integrated circuit. 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: P02E8 2015 GMC Sierra indicates Diesel Intake Air Flow Position Sensor Circuit Low.
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 198

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 10, 2022

Description
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
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Code P02E8 2015 GMC Sierra Description

The Throttle Body Assembly contains a contact-less inductive throttle position sensing element that is managed by a customized integrated circuit. The throttle position sensor is mounted within the throttle body assembly and is not serviceable. The Engine Control Module (ECM) supplies the throttle body with a 5 V reference circuit, a low reference circuit. The asynchronous signal means communication is only going from the throttle body to the ECM. The throttle body cannot receive data from the ECM over the signal/serial data circuit. The throttle position sensor provides a signal voltage that changes relative to throttle blade angle. The throttle position sensor information is transmitted between the throttle body and the ECM on the signal/serial data circuit. The ECM decodes the serial data signal and is used as voltages for throttle position sensor 1 and 2. The Diagnostic Trouble Code (DTC) will be set when the ECM detects that the throttle valve position sensor SENT signal voltage is less than a calibrated threshold for 0.5 s.

OBDII Code P02E8 2015 GMC Sierra - Diesel Intake Air Flow Position Sensor Circuit Low - AutoCodes.com — P02E8 2015 GMC Sierra Code - Diesel Intake Air Flow Position Sensor Circuit Low

What does this mean?

What are the Possible Causes of the DTC P02E8 2015 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 P02E8 2015 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

User Submitted Video

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P02E8 2015 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 P02E8 2015 GMC Sierra Code

1. What does the P02E8 code mean on a 2015 GMC Sierra?

The P02E8 code indicates a "Diesel Intake Air Flow Position Sensor Circuit Low," meaning the sensor is detecting a voltage below the expected range.

2. What are the common symptoms of the P02E8 code?

Symptoms may include poor engine performance, reduced fuel efficiency, difficulty starting, and the check engine light being illuminated.

3. What causes the P02E8 code on a 2015 GMC Sierra?

Common causes include a faulty intake air flow position sensor, damaged wiring, corroded connections, or a malfunctioning ECM.

4. Can I drive my 2015 GMC Sierra with the P02E8 code?

Driving with this code is not recommended as it can lead to poor performance and potentially damage the engine if the air-fuel mixture is incorrect.

5. How do I diagnose the P02E8 code?

Diagnosis involves using an OBDII scanner to confirm the code, visually inspecting wiring and connectors, and testing the intake air flow position sensor with a multimeter.

6. How do I fix the P02E8 code on my GMC Sierra?

Common fixes include repairing or replacing damaged wiring, cleaning corroded connections, or replacing the intake air flow position sensor if itâ€™s faulty.

7. Could a dirty air filter cause the P02E8 code?

A dirty air filter is unlikely to cause this specific code but can contribute to airflow issues. Always ensure the air filter is clean and properly maintained.

8. How much does it cost to fix the P02E8 code?

Repair costs vary but typically range from $100 to $300 for parts and labor, depending on whether the issue is with the sensor or wiring.

9. Can a failing ECM cause the P02E8 code?

Yes, a malfunctioning ECM can occasionally trigger this code, though itâ€™s less common than sensor or wiring issues.

10. How can I prevent the P02E8 code from recurring?

Regular maintenance, including checking wiring and connections, keeping the air intake system clean, and promptly addressing sensor issues, can help prevent this code.