AutoCodes – GMC – P023F GMC

P023F GMC 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 GMC 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 12,237

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

What does this mean?

What are the Possible Causes of the DTC P023F GMC?

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 GMC?

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 GMC 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 GMC code?

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

Need Help with the Code?

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

Information for Specific GMC Models

P023F 2014 GMC Sierra — Fuel Pump Control Circuit
P023F 2015 GMC Sierra — Fuel Pump Control Circuit
P023F 2016 GMC Sierra — Fuel Pump Control Circuit
P023F 2017 GMC Sierra — Fuel Pump Control Circuit
P023F 2018 GMC Sierra — Fuel Pump Control Circuit

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 GMC Code

1. What are the common symptoms of OBDII code P023F in a GMC vehicle?

The common symptoms of OBDII code P023F in a GMC vehicle include engine stalling, hesitation during acceleration, and the fuel pump not functioning properly.

2. What are the possible causes of OBDII code P023F in a GMC vehicle?

The possible causes of OBDII code P023F in a GMC vehicle can be a faulty fuel pump control module, damaged wiring or connectors in the fuel pump circuit, or a malfunctioning fuel pump relay.

3. How can I diagnose OBDII code P023F in my GMC vehicle?

Diagnosing OBDII code P023F in a GMC vehicle involves using a diagnostic scanner to retrieve the trouble code, checking the fuel pump control module for any visible damage, and inspecting the wiring and connectors for any signs of wear or corrosion.

4. Can I still drive my GMC vehicle with OBDII code P023F present?

It is not recommended to drive your GMC vehicle with OBDII code P023F present, as it can lead to engine performance issues and potential stalling, which can compromise safety.

5. How can I repair OBDII code P023F in my GMC vehicle?

To repair OBDII code P023F in a GMC vehicle, you may need to replace the fuel pump control module, repair or replace damaged wiring or connectors, or replace the fuel pump relay, depending on the root cause of the issue.

6. Are there any DIY tips for fixing OBDII code P023F in a GMC vehicle?

While some basic troubleshooting steps can be taken, such as checking fuses and relays related to the fuel pump circuit, it is recommended to consult a professional mechanic for a proper diagnosis and repair of OBDII code P023F in a GMC vehicle.

7. How much does it cost to repair OBDII code P023F in a GMC vehicle?

The cost of repairing OBDII code P023F in a GMC vehicle can vary depending on the root cause of the issue, the cost of parts needed for repair, and the labor rates of the mechanic or repair shop.

8. Is OBDII code P023F a common issue in GMC vehicles?

While OBDII code P023F related to the fuel pump control circuit is not as common as some other codes, it can still occur in GMC vehicles, especially in older models or vehicles with high mileage.

9. Can a faulty fuel pump cause OBDII code P023F to appear in a GMC vehicle?

Yes, a faulty fuel pump can cause OBDII code P023F to appear in a GMC vehicle, as the fuel pump control circuit relies on the proper functioning of the fuel pump to operate effectively.

10. How soon should I address OBDII code P023F in my GMC vehicle to avoid further damage?

It is recommended to address OBDII code P023F in your GMC vehicle as soon as possible to avoid potential engine performance issues, stalling, or further damage to the fuel pump control circuit.