AutoCodes – GMC – P020E 2018 GMC Sierra

P020E 2018 GMC Sierra Code - Cylinder 5 Injection Timing

Quick Answer

The Engine Control Module (ECM) has the ability to learn injector timing performance. Common causes include Faulty Fuel Injector 5, Fuel Injector 5 harness is open or shorted, Fuel Injector 5 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: P020E 2018 GMC Sierra indicates Cylinder 5 Injection Timing.
Common causes: Common causes include Faulty Fuel Injector 5, Fuel Injector 5 harness is open or shorted, Fuel Injector 5 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 249

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 Mar 22, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P020E 2018 GMC Sierra Description

The Engine Control Module (ECM) has the ability to learn injector timing performance. When the engine is at operating temperature, throttle closed and in deceleration fuel cut-off mode, the ECM will pulse each injector individually and measure the changes in rotational speed of the crankshaft using the input from the crankshaft position sensor. The ECM will run this diagnostic at one fuel rail pressure operating point for each injector. The ECM stores the injector timing value. The Diagnostic Trouble Code (DTC) will be set when the time to build up sufficient current to open the injector is below or above a predetermined threshold.

OBDII Code P020E 2018 GMC Sierra - Cylinder 5 Injection Timing - AutoCodes.com — P020E 2018 GMC Sierra Code - Cylinder 5 Injection Timing

What does this mean?

What are the Possible Causes of the DTC P020E 2018 GMC Sierra?

Faulty Fuel Injector 5
Fuel Injector 5 harness is open or shorted
Fuel Injector 5 circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P020E 2018 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P020E 2018 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.

Need more information about the P020E 2018 GMC Sierra 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 P020E 2018 GMC Sierra Code

1. What does OBDII code P020E for a 2018 GMC Sierra indicate?

The code P020E in a 2018 GMC Sierra relates to Cylinder 5 Injection Timing, signaling an issue with the fuel injector timing for the fifth cylinder.

2. What are common symptoms of OBDII code P020E in a 2018 GMC Sierra?

Common symptoms of OBDII code P020E in a 2018 GMC Sierra may include rough idling, reduced engine performance, misfires, and potentially decreased fuel efficiency.

3. What are possible causes of OBDII code P020E in a 2018 GMC Sierra?

Possible causes of OBDII code P020E in a 2018 GMC Sierra include a faulty fuel injector, wiring issues in the fuel injector circuit, problems with the fuel injector control module, or issues with the engine control module (ECM).

4. How can I diagnose OBDII code P020E in a 2018 GMC Sierra?

Diagnosing OBDII code P020E in a 2018 GMC Sierra involves using a diagnostic scan tool to read the code, checking the wiring and connections related to the fuel injector for Cylinder 5, and testing the fuel injector itself for proper function.

5. Can I continue driving my 2018 GMC Sierra with OBDII code P020E?

It is not recommended to continue driving a 2018 GMC Sierra with OBDII code P020E, as it can lead to further engine damage and potential safety hazards. It is best to address the issue promptly.

6. What is the typical repair process for OBDII code P020E in a 2018 GMC Sierra?

The repair process for OBDII code P020E in a 2018 GMC Sierra often involves replacing the faulty fuel injector for Cylinder 5, repairing any damaged wiring or connections, and clearing the code from the ECM.

7. Are there any preventative maintenance tips to avoid OBDII code P020E in a 2018 GMC Sierra?

To help prevent OBDII code P020E in a 2018 GMC Sierra, it is advisable to follow the manufacturer's recommended maintenance schedule, use high-quality fuel, and promptly address any engine performance issues.

8. Can a DIY enthusiast fix OBDII code P020E in a 2018 GMC Sierra?

While some DIY enthusiasts may have the skills to diagnose and replace a faulty fuel injector, addressing OBDII code P020E in a 2018 GMC Sierra often requires specialized tools and expertise best handled by a professional mechanic.

9. How much does it typically cost to repair OBDII code P020E in a 2018 GMC Sierra?

The cost to repair OBDII code P020E in a 2018 GMC Sierra can vary depending on the exact cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

10. Will resetting the ECM clear OBDII code P020E in a 2018 GMC Sierra?

Resetting the ECM may temporarily clear OBDII code P020E in a 2018 GMC Sierra, but if the underlying issue with Cylinder 5 Injection Timing is not addressed, the code is likely to reappear.