AutoCodes – Chevrolet – P02E9 Chevrolet

P02E9 Chevrolet Code - Diesel Intake Air Flow Position Sensor Circuit High

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: P02E9 Chevrolet indicates Diesel Intake Air Flow Position Sensor Circuit High.
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 2,851

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 P02E9 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 the 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 greater than a calibrated threshold for 0.5 s.

OBDII Code P02E9 Chevrolet - Diesel Intake Air Flow Position Sensor Circuit High - AutoCodes.com — P02E9 Chevrolet Code - Diesel Intake Air Flow Position Sensor Circuit High

What does this mean?

What are the Possible Causes of the DTC P02E9 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 P02E9 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 P02E9 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 P02E9 Chevrolet code?

Need more information on how to fix the P02E9 Chevrolet code? Get Access to Factory Service Manuals

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Information for Specific Chevrolet Models

P02E9 2014 Chevrolet Silverado — Diesel Intake Air Flow Position Sensor Circuit High
P02E9 2015 Chevrolet Silverado — Diesel Intake Air Flow Position Sensor Circuit High
P02E9 2016 Chevrolet Silverado — Diesel Intake Air Flow Position Sensor Circuit High
P02E9 2017 Chevrolet Silverado — Diesel Intake Air Flow Position Sensor Circuit High
P02E9 2018 Chevrolet Silverado — Diesel Intake Air Flow Position Sensor Circuit High

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 P02E9 Chevrolet Code

1. What are the common symptoms of OBDII code P02E9 in a Chevrolet diesel vehicle?

The common symptoms of code P02E9 include poor engine performance, decreased fuel efficiency, rough idling, and possibly an illuminated Check Engine Light.

2. What does the OBDII code P02E9 indicate in a Chevrolet diesel vehicle?

OBDII code P02E9 indicates a problem with the Diesel Intake Air Flow Position Sensor Circuit showing a high voltage reading.

3. What are the possible causes of OBDII code P02E9 in a Chevrolet diesel vehicle?

Possible causes of code P02E9 include a faulty intake air flow sensor, damaged wiring or connectors in the sensor circuit, or issues with the engine control module.

4. How can I diagnose the OBDII code P02E9 in my Chevrolet diesel vehicle?

Diagnosing code P02E9 involves using a scan tool to read the trouble code, checking the intake air flow sensor and its circuit for any visible damage, and testing the sensor's voltage and resistance.

5. Can I continue driving my Chevrolet diesel vehicle with OBDII code P02E9?

It is not recommended to continue driving your vehicle with code P02E9 present, as it can lead to further engine damage and decreased performance.

6. How can I repair OBDII code P02E9 in my Chevrolet diesel vehicle?

Repairing code P02E9 may involve replacing the Diesel Intake Air Flow Position Sensor, repairing or replacing damaged wiring or connectors, or reprogramming the engine control module.

7. Will resetting the trouble codes make OBDII code P02E9 go away permanently?

Resetting the trouble codes may temporarily clear the Check Engine Light, but if the underlying issue causing code P02E9 is not addressed, the code is likely to reappear.

8. How much does it typically cost to repair OBDII code P02E9 in a Chevrolet diesel vehicle?

The cost of repairing code P02E9 can vary depending on the exact cause of the issue, but it may range from $200 to $500 or more, including parts and labor.

9. Can a DIY enthusiast with basic mechanical knowledge fix OBDII code P02E9 in a Chevrolet diesel vehicle?

Depending on the specific problem causing code P02E9, a DIY enthusiast with basic mechanical knowledge may be able to replace the intake air flow sensor or repair damaged wiring themselves.

10. Are there any preventive maintenance tips to avoid OBDII code P02E9 in a Chevrolet diesel vehicle?

To prevent OBDII code P02E9, it is recommended to follow the manufacturer's maintenance schedule, keep the intake air flow sensor and its circuit clean and free of debris, and address any engine performance issues promptly.