AutoCodesChevrolet – P02E9 2018 Chevrolet Silverado

P02E9 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 759
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 10, 2022
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Code P02E9 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado - Diesel Intake Air Flow Position Sensor Circuit High - AutoCodes.com
P02E9 2018 Chevrolet Silverado Code - Diesel Intake Air Flow Position Sensor Circuit High

What are the Possible Causes of the DTC P02E9 2018 Chevrolet Silverado?

  • 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 2018 Chevrolet Silverado?

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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P02E9 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado 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 P02E9 2018 Chevrolet Silverado Code

1. What does the OBDII code P02E9 mean on a 2018 Chevrolet Silverado?

The code P02E9 indicates a "Diesel Intake Air Flow Position Sensor Circuit High," meaning the intake air flow position sensor is detecting an abnormally high voltage signal.

2. What are the common symptoms of code P02E9 in a 2018 Chevrolet Silverado?

Common symptoms include poor engine performance, reduced fuel efficiency, rough idling, and possibly a check engine light.

3. What causes the P02E9 code to appear in a Chevy Silverado?

Possible causes include a faulty intake air flow position sensor, wiring issues such as corrosion or damage, or a malfunctioning engine control module (ECM).

4. Can I drive my 2018 Chevrolet Silverado with the P02E9 code?

While the truck may still be drivable, it’s not recommended as it can lead to poor performance, reduced efficiency, and potential damage to the engine or emissions system.

5. How do I diagnose the P02E9 code on my Silverado?

Diagnosing this code involves checking the intake air flow position sensor, inspecting wiring and connectors for damage, and using a scan tool to monitor sensor voltage readings.

6. How do I fix the P02E9 code on a 2018 Chevrolet Silverado?

Repairs might include replacing the intake air flow position sensor, repairing or replacing damaged wiring, or clearing the code after addressing the issue.

7. How much does it cost to fix the P02E9 code on a Chevy Silverado?

The cost depends on the exact issue. Replacing the sensor can cost $100-$300, while wiring repairs may vary based on labor time and complexity.

8. Can a dirty air filter cause the P02E9 code?

A dirty air filter is unlikely to directly cause this code, but it can contribute to airflow issues, which may indirectly affect sensor readings.

9. Will clearing the P02E9 code with a scan tool fix the problem?

Clearing the code will turn off the check engine light temporarily, but the issue will likely return unless the underlying cause is addressed.

10. Does the P02E9 code affect emissions on a 2018 Chevrolet Silverado?

Yes, this code can impact the emissions system by causing incorrect air-to-fuel ratios, potentially leading to higher emissions output.

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