AutoCodes – GMC – P023F 2016 GMC Sierra

P023F 2016 GMC Sierra Code - Fuel Pump Control Circuit

Quick Answer

The Engine Control Module (ECM) supplies voltage to the fuel pump driver control module when the ECM detects that the ignition is on. Common causes include Faulty Fuel Pump, Fuel Pump harness is open or shorted, Fuel Pump 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: P023F 2016 GMC Sierra indicates Fuel Pump Control Circuit.
Common causes: Common causes include Faulty Fuel Pump, Fuel Pump harness is open or shorted, Fuel Pump 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 282

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 02, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P023F 2016 GMC Sierra Description

The Engine Control Module (ECM) supplies voltage to the fuel pump driver control module when the ECM detects that the ignition is on. The voltage from the ECM to the fuel pump driver control module remains active for 2 s, unless the engine is in crank or run. While this voltage is being received, the fuel pump driver control module supplies a varying voltage to the fuel tank fuel pump module in order to maintain the desired fuel line pressure. The fuel pump driver control module monitors the fuel pump voltage to determine if the fuel pump is functioning as commanded. The Diagnostic Trouble Code (DTC) will be set if the fuel pump driver control module detects that the fuel pump current is less than 1 A and the fuel pump duty cycle is approximately 30 - 60 % for 1 s.

OBDII Code P023F 2016 GMC Sierra - Fuel Pump Control Circuit - AutoCodes.com — P023F 2016 GMC Sierra Code - Fuel Pump Control Circuit

What does this mean?

What are the Possible Causes of the DTC P023F 2016 GMC Sierra?

Faulty Fuel Pump
Fuel Pump harness is open or shorted
Fuel Pump circuit poor electrical connection
Faulty Fuel Pump Driver Control Module

How to Fix the DTC P023F 2016 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 P023F 2016 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 P023F 2016 GMC Sierra code?

Need more information on how to fix the P023F 2016 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P023F 2016 GMC Sierra code diagnosed by a professional: Find a repair shop in your area

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 P023F 2016 GMC Sierra Code

1. What does the OBDII code P023F mean on a 2016 GMC Sierra?

P023F indicates an issue with the fuel pump control circuit, suggesting the Engine Control Module (ECM) has detected a fault in the electrical circuit controlling the fuel pump.

2. What are the common symptoms of the P023F code in a 2016 GMC Sierra?

Symptoms may include difficulty starting, engine stalling, poor fuel efficiency, reduced power output, or the Check Engine Light illuminating.

3. What causes the P023F code to appear on a 2016 GMC Sierra?

Common causes include a faulty fuel pump, damaged wiring or connectors in the fuel pump circuit, a malfunctioning fuel pump control module, or issues with the ECM.

4. Can a dirty fuel filter cause the P023F code?

While a dirty fuel filter can cause fuel delivery problems, it typically wouldnâ€™t trigger the P023F code, as this code specifically relates to the electrical control circuit.

5. Is it safe to drive a 2016 GMC Sierra with the P023F code?

Driving with this code is not recommended, as it can lead to engine performance issues, stalling, or even complete loss of power, which can be dangerous.

6. How can I diagnose the P023F code on my 2016 GMC Sierra?

Start by inspecting the fuel pump wiring and connectors for damage or corrosion, check the fuel pump control module, and test the fuel pump itself for proper operation using a multimeter.

7. What tools do I need to fix a P023F code on a 2016 GMC Sierra?

Youâ€™ll need an OBDII scanner, a multimeter to test electrical circuits, and possibly basic hand tools to inspect and replace components.

8. How much does it cost to fix the P023F code on a 2016 GMC Sierra?

Repair costs vary but may range from $100 for simple wiring repairs to $500 or more if the fuel pump or control module needs replacement.

9. Can a software update fix the P023F code on a 2016 GMC Sierra?

In rare cases, a software update to the ECM may resolve the issue if itâ€™s related to programming errors. However, physical component issues are more likely.

10. Does the P023F code always mean the fuel pump needs to be replaced?

No, the fuel pump is not always the issue. The problem could lie in the wiring, connectors, or control module, so thorough diagnostics are essential before replacing parts.