AutoCodes – Chevrolet – P02E8 Chevrolet

P02E8 Chevrolet 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 Chevrolet 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 3,846

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 Chevrolet 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 Chevrolet - Diesel Intake Air Flow Position Sensor Circuit Low - AutoCodes.com — P02E8 Chevrolet Code - Diesel Intake Air Flow Position Sensor Circuit Low

What does this mean?

What are the Possible Causes of the DTC P02E8 Chevrolet?

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 Chevrolet?

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 Chevrolet 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 P02E8 Chevrolet code?

Need more information on how to fix the P02E8 Chevrolet code? Get Access to Factory Service Manuals

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Information for Specific Chevrolet Models

P02E8 2014 Chevrolet Silverado — Diesel Intake Air Flow Position Sensor Circuit Low
P02E8 2015 Chevrolet Silverado — Diesel Intake Air Flow Position Sensor Circuit Low
P02E8 2016 Chevrolet Silverado — Diesel Intake Air Flow Position Sensor Circuit Low
P02E8 2017 Chevrolet Silverado — Diesel Intake Air Flow Position Sensor Circuit Low
P02E8 2018 Chevrolet Silverado — Diesel Intake Air Flow Position Sensor Circuit Low

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 Chevrolet Code

1. What are the common symptoms of OBDII code P02E8 for a Chevrolet diesel vehicle?

- Common symptoms include poor engine performance, reduced fuel efficiency, rough idling, and potential stalling.

2. What does the OBDII code P02E8 Chevrolet indicate?

- The code indicates a problem with the Diesel Intake Air Flow Position Sensor Circuit being too low.

3. What are the possible causes of the P02E8 code on a Chevrolet diesel?

- Possible causes include a faulty intake air flow sensor, wiring issues, sensor circuitry problems, or a malfunctioning engine control module.

4. How can I diagnose the P02E8 code on my Chevrolet diesel?

- Diagnosing the code involves using an OBDII scanner to retrieve the specific fault code, inspecting the intake air flow sensor and related wiring, and checking for any loose connections.

5. Can I drive my Chevrolet with the P02E8 code?

- It is not recommended to drive your Chevrolet with the P02E8 code as it can lead to further engine damage and potential safety hazards.

6. How can I repair the P02E8 code on my Chevrolet diesel?

- Repair options include replacing the intake air flow sensor, repairing any damaged wiring or connections, and resetting the engine control module.

7. Do I need a professional mechanic to fix the P02E8 code on my Chevrolet?

- While some DIY enthusiasts may be able to diagnose and fix the issue, it is recommended to seek help from a professional mechanic for proper diagnosis and repair.

8. Can a dirty air filter cause the P02E8 code on a Chevrolet diesel?

- A dirty air filter can restrict airflow and potentially affect sensor readings, but it is not a common cause of the specific P02E8 code related to the intake air flow sensor circuit.

9. How much does it cost to repair the P02E8 code on a Chevrolet diesel?

- Repair costs can vary depending on the exact cause of the issue, but it is advisable to budget for sensor replacement or wiring repairs which can range from $100 to $300 or more.

10. Will resetting the OBDII system clear the P02E8 code on my Chevrolet?

- While resetting the OBDII system may temporarily clear the code, it is important to address the underlying issue causing the code to prevent it from reoccurring.