AutoCodes – GMC – P023F 2014 GMC Sierra

P023F 2014 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 2014 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 272
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 02, 2022
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Code P023F 2014 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 2014 GMC Sierra - Fuel Pump Control Circuit - AutoCodes.com
P023F 2014 GMC Sierra Code - Fuel Pump Control Circuit

What are the Possible Causes of the DTC P023F 2014 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 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 P023F 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 P023F 2014 GMC Sierra code?

Need more information on how to fix the P023F 2014 GMC Sierra code? Get Access to Factory Service Manuals

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 P023F 2014 GMC Sierra Code

What does the OBDII code P023F mean for a 2014 GMC Sierra?

The P023F code indicates a malfunction in the fuel pump control circuit, which may prevent the fuel pump from operating correctly.

What are the common symptoms of code P023F in a 2014 GMC Sierra?

Symptoms include difficulty starting, engine stalling, poor acceleration, reduced fuel efficiency, or the engine not starting at all.

What causes code P023F to appear in a 2014 GMC Sierra?

Common causes include a faulty fuel pump relay, damaged wiring or connectors in the fuel pump circuit, a failing fuel pump, or a malfunctioning fuel pump control module.

Can I drive my 2014 GMC Sierra with the P023F code?

Driving with this code is not recommended as it can lead to engine stalling or failure to start, potentially leaving you stranded.

How can I diagnose the cause of the P023F code in my GMC Sierra?

Start by inspecting the wiring and connectors in the fuel pump circuit for damage or corrosion. Then, test the fuel pump relay, fuel pump, and control module for proper operation.

How do I fix the P023F code on a 2014 GMC Sierra?

Repairs may include replacing a damaged fuel pump relay, repairing or replacing damaged wiring, replacing the fuel pump, or replacing the fuel pump control module.

What tools are needed to troubleshoot the P023F code?

You'll need an OBDII scanner, a multimeter to test electrical components, and possibly wiring diagrams to trace the fuel pump circuit.

Is the P023F code specific to GMC vehicles?

No, P023F is a generic OBDII code applicable to many vehicles, but the exact repair steps may vary depending on the make and model.

How much does it cost to fix the P023F code on a 2014 GMC Sierra?

Repair costs can range from $100 to $1,000, depending on whether you need to replace parts like the fuel pump or control module.

Can a bad fuel pump trigger the P023F code?

Yes, a failing or malfunctioning fuel pump is a common cause of the P023F code. It may not be able to maintain proper fuel pressure.

Discuss the causes and fixes for P023F 2014 GMC Sierra OBDII Code

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