AutoCodes – GMC – P020F 2014 GMC Sierra

P020F 2014 GMC Sierra Code - Cylinder 6 Injection Timing

Quick Answer

The Engine Control Module (ECM) has the ability to learn injector timing performance. Common causes include Faulty Fuel Injector 6, Fuel Injector 6 harness is open or shorted, Fuel Injector 6 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: P020F 2014 GMC Sierra indicates Cylinder 6 Injection Timing.
Common causes: Common causes include Faulty Fuel Injector 6, Fuel Injector 6 harness is open or shorted, Fuel Injector 6 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 157

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 P020F 2014 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 P020F 2014 GMC Sierra - Cylinder 6 Injection Timing - AutoCodes.com — P020F 2014 GMC Sierra Code - Cylinder 6 Injection Timing

What does this mean?

What are the Possible Causes of the DTC P020F 2014 GMC Sierra?

Faulty Fuel Injector 6
Fuel Injector 6 harness is open or shorted
Fuel Injector 6 circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P020F 2014 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 P020F 2014 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 P020F 2014 GMC Sierra code?

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Need Help with the 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 P020F 2014 GMC Sierra Code

1. What does OBDII code P020F on a 2014 GMC Sierra indicate?

The P020F code specifically relates to Cylinder 6 Injection Timing on the 2014 GMC Sierra.

2. What are the common symptoms of a P020F code on a 2014 GMC Sierra?

Common symptoms include rough idling, engine misfires, decreased fuel efficiency, and potential stalling issues.

3. What are the possible causes of a P020F code on a 2014 GMC Sierra?

Potential causes include faulty fuel injectors, wiring issues, ECM problems, fuel delivery problems, or mechanical issues within Cylinder 6.

4. How can I diagnose a P020F code on my 2014 GMC Sierra?

Diagnosing a P020F code requires using an OBDII scanner to retrieve the code, conducting a visual inspection of the fuel injector and related components, and performing electrical tests on the injector and wiring.

5. What are the recommended repair tips for a P020F code on a 2014 GMC Sierra?

Repair tips include replacing the faulty fuel injector, repairing any damaged wiring, checking fuel pressure, cleaning the fuel system, and ensuring proper ECM function.

6. Can I still drive my 2014 GMC Sierra with a P020F code?

It is not recommended to drive your vehicle with a P020F code, as it can lead to further engine damage and potential safety hazards. Immediate attention and repair are advised.

7. How much does it typically cost to repair a P020F code on a 2014 GMC Sierra?

The cost of repairing a P020F code can vary depending on the extent of the damage and the specific repairs needed. Costs typically range from a few hundred to over a thousand dollars.

8. Will resetting the OBDII system clear a P020F code on a 2014 GMC Sierra?

Resetting the OBDII system may temporarily clear the code, but it will likely reappear if the underlying issue causing the P020F code is not addressed and repaired.

9. How long does it take to repair a P020F code on a 2014 GMC Sierra?

The repair time for a P020F code can vary based on the specific issue and the expertise of the mechanic. It can take anywhere from a few hours to a full day or more to properly diagnose and repair the problem.

10. Are there any preventive measures to avoid encountering a P020F code on a 2014 GMC Sierra?

Regular maintenance, such as fuel system cleaning, using quality fuel, and addressing any engine performance issues promptly, can help prevent the occurrence of a P020F code on your 2014 GMC Sierra.