AutoCodes – Lincoln – P0628 Lincoln

P0628 Lincoln Code - Fuel Pump 'A' Control Circuit Low

Quick Answer

The Engine Control Module (ECM) monitors the Fuel Pump Control Circuit. Common causes include Faulty fuel pump relay, Faulty fuel pump, Fuel pump harness is open or shorted. 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: P0628 Lincoln indicates Fuel Pump 'A' Control Circuit Low.
Common causes: Common causes include Faulty fuel pump relay, Faulty fuel pump, Fuel pump harness is open or shorted.
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 1,567

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 May 01, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0628 Lincoln Description

The Engine Control Module (ECM) monitors the Fuel Pump Control Circuit. The ECM sets the OBDII code when the Fuel Pump Control Circuit is out of factory specifications.

OBDII Code P0628 Lincoln - Fuel Pump 'A' Control Circuit Low - AutoCodes.com — P0628 Lincoln Code - Fuel Pump 'A' Control Circuit Low

What does this mean?

What are the Possible Causes of the DTC P0628 Lincoln?

Faulty fuel pump relay
Faulty fuel pump
Fuel pump harness is open or shorted
Fuel pump circuit poor electrical connection
Faulty fuel pump control module (if applicable)

How to Fix the DTC P0628 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 P0628 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 P0628 Lincoln code?

Need more information on how to fix the P0628 Lincoln code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0628 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 P0628 Lincoln Code

1. What are common symptoms of OBDII code P0628 in a Lincoln related to the Fuel Pump 'A' Control Circuit Low?

Symptoms may include difficulty starting the vehicle, engine stalling, and a lack of power while driving.

2. What are the possible causes of OBDII code P0628 in a Lincoln related to the Fuel Pump 'A' Control Circuit Low?

Possible causes include a faulty fuel pump control module, damaged wiring or connectors, or a defective fuel pump relay.

3. How can I diagnose the issue causing OBDII code P0628 in my Lincoln related to the Fuel Pump 'A' Control Circuit Low?

Perform a thorough inspection of the fuel pump control module, check for damaged wiring or connectors, and test the fuel pump relay for proper functionality.

4. Can driving with OBDII code P0628 in a Lincoln related to the Fuel Pump 'A' Control Circuit Low cause further damage?

Continuing to drive with this code may lead to fuel pump failure, engine stalling, or other serious issues, so prompt diagnosis and repair are recommended.

5. What are some repair tips for resolving OBDII code P0628 in a Lincoln related to the Fuel Pump 'A' Control Circuit Low?

Consider replacing the fuel pump control module, repairing any damaged wiring or connectors, and testing or replacing the fuel pump relay as necessary.

6. Is it safe to reset the OBDII code P0628 in a Lincoln related to the Fuel Pump 'A' Control Circuit Low without addressing the underlying issue?

Resetting the code without fixing the root cause may temporarily turn off the check engine light, but the problem will likely reoccur and potentially lead to more severe issues.

7. Can a DIY enthusiast repair OBDII code P0628 in a Lincoln related to the Fuel Pump 'A' Control Circuit Low?

While some basic troubleshooting and repairs may be possible for experienced DIYers, diagnosing and fixing this code often requires specialized tools and knowledge best handled by a professional mechanic.

8. How much does it typically cost to repair OBDII code P0628 in a Lincoln related to the Fuel Pump 'A' Control Circuit Low?

Costs can vary depending on the exact cause of the issue, but expect to pay for parts such as a fuel pump control module or relay, as well as labor for diagnosis and repair.

9. Will OBDII code P0628 in a Lincoln related to the Fuel Pump 'A' Control Circuit Low affect fuel efficiency?

Yes, this code can impact fuel efficiency due to issues with the fuel pump control circuit, potentially causing the vehicle to run rich or lean, leading to poor gas mileage.

10. How urgent is it to address OBDII code P0628 in a Lincoln related to the Fuel Pump 'A' Control Circuit Low?

It is important to address this code promptly to prevent potential engine stalling, fuel pump failure, or other drivability issues that could compromise the safety and performance of the vehicle.