AutoCodes – Lincoln – P023F Lincoln

P023F Lincoln Code - Fuel Pump Secondary Circuit/Open

Quick Answer

The Engine Control Module (ECM) provides ignition positive voltage to the coil side of the fuel pump relay. Common causes include Blown Fuel Pump fuse, Open Fuel Pump Monitor Circuit, Faulty Fuel Pump Relay. 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 Lincoln indicates Fuel Pump Secondary Circuit/Open.
Common causes: Common causes include Blown Fuel Pump fuse, Open Fuel Pump Monitor Circuit, Faulty Fuel Pump Relay.
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 1,423

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 Apr 13, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P023F Lincoln Description

The Engine Control Module (ECM) provides ignition positive voltage to the coil side of the fuel pump relay. When the ignition switch is first turned ON, the ECM energizes the fuel pump relay, which applies power to the fuel pump. The ECM enables the fuel pump relay as long as the engine is cranking or running, and crankshaft reference pulses are received. If no crankshaft reference pulses are received, the ECM de-energizes the fuel pump relay after 2 seconds. The ECM monitors the voltage on the fuel pump relay control circuit.

OBDII Code P023F Lincoln - Fuel Pump Secondary Circuit/Open - AutoCodes.com — P023F Lincoln Code - Fuel Pump Secondary Circuit/Open

What does this mean?

What are the Possible Causes of the DTC P023F Lincoln?

Blown Fuel Pump fuse
Open Fuel Pump Monitor Circuit
Faulty Fuel Pump Relay
Damaged Engine Control Module (ECM)

How to Fix the DTC P023F Lincoln?

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 Lincoln 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 Lincoln code?

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

Need Help with the Code?

Get the P023F Lincoln 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 Lincoln Code

1. What are the common symptoms of OBDII code P023F in a Lincoln related to the fuel pump secondary circuit?

Common symptoms include engine stalling, rough idling, difficulty starting the vehicle, and a loss of power while driving.

2. What can cause the OBDII code P023F in a Lincoln indicating a fuel pump secondary circuit/open issue?

Possible causes include 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 the OBDII code P023F in my Lincoln that points to a fuel pump secondary circuit/open problem?

A thorough diagnostic procedure involves checking the fuel pump fuse, inspecting the wiring harness for any visible damage, testing the fuel pump relay, and using a multimeter to measure voltage at various points in the circuit.

4. Is it safe to continue driving my Lincoln with the OBDII code P023F related to a fuel pump secondary circuit/open issue?

It is not recommended to continue driving the vehicle with this code, as it can lead to further damage to the fuel system and potential safety hazards such as stalling while driving.

5. Can a DIY enthusiast repair the OBDII code P023F in a Lincoln caused by a fuel pump secondary circuit/open problem?

While some basic troubleshooting steps can be performed by DIY enthusiasts, repairing this issue often requires specialized tools and expertise. It is recommended to consult a professional mechanic for a proper diagnosis and repair.

6. How much does it typically cost to repair the OBDII code P023F in a Lincoln related to a fuel pump secondary circuit/open issue?

The cost of repair can vary depending on the underlying cause of the problem, but it usually ranges from $200 to $600, including parts and labor.

7. Are there any preventive maintenance tips to avoid encountering the OBDII code P023F in a Lincoln due to a fuel pump secondary circuit/open fault?

Regularly checking the fuel system components for signs of wear or damage, such as corroded connectors or frayed wiring, can help prevent issues that may trigger this code.

8. Can extreme weather conditions affect the likelihood of the OBDII code P023F appearing in a Lincoln due to a fuel pump secondary circuit/open issue?

Extreme temperatures, especially heat, can exacerbate existing issues in the fuel pump circuit and increase the chances of encountering this fault code. It is important to ensure proper insulation and protection for the wiring and components.

9. How long does it typically take to repair the OBDII code P023F in a Lincoln caused by a fuel pump secondary circuit/open problem?

The repair process can take anywhere from a few hours to a full day, depending on the complexity of the issue and the availability of replacement parts.

10. Can resetting the OBDII system clear the P023F code related to a fuel pump secondary circuit/open issue in a Lincoln?

Resetting the OBDII system may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear. It is important to diagnose and fix the root cause of the problem to prevent further issues.