AutoCodes – Audi – P0628 Audi

P0628 Audi 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 Audi 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 4,335

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

What does this mean?

What are the Possible Causes of the DTC P0628 Audi?

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 Audi?

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 Audi 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 Audi code?

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

Need Help with the Code?

Get the P0628 Audi 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 Audi Code

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

The common symptoms include difficulty starting the vehicle, engine stalling, poor engine performance, and in some cases, the fuel pump may not engage at all.

2. What are the potential causes of OBDII code P0628 in an Audi?

The code P0628 in an Audi related to the Fuel Pump 'A' Control Circuit Low can be caused by issues such as a faulty fuel pump relay, damaged wiring in the fuel pump circuit, or a malfunctioning fuel pump control module.

3. How can I diagnose OBDII code P0628 in my Audi?

Diagnosing code P0628 involves using a diagnostic scanner to retrieve the trouble codes, testing the fuel pump relay, inspecting the wiring in the fuel pump circuit for any damage, and checking the fuel pump control module for proper operation.

4. Can I drive my Audi with OBDII code P0628 present?

It is not recommended to drive your Audi with code P0628 present, as it can lead to potential issues such as engine stalling or lack of proper fuel delivery, which can affect the vehicle's performance and safety.

5. How can I repair OBDII code P0628 in my Audi related to the Fuel Pump 'A' Control Circuit Low?

To repair code P0628, you may need to replace the fuel pump relay, repair any damaged wiring in the fuel pump circuit, or replace the fuel pump control module if found to be faulty.

6. Are there any tips to prevent OBDII code P0628 from occurring in my Audi?

To prevent code P0628, it is advisable to regularly inspect and maintain the fuel pump system, including checking the fuel pump relay, ensuring proper wiring connections, and addressing any fuel pump-related issues promptly.

7. Is OBDII code P0628 related to the Fuel Pump 'A' Control Circuit Low a common issue in Audis?

While not extremely common, code P0628 related to the Fuel Pump 'A' Control Circuit Low can occur in Audis due to various factors such as component wear, electrical issues, or fuel system malfunctions.

8. Can a DIY enthusiast fix OBDII code P0628 in an Audi?

Depending on your skill level and experience with automotive repairs, it is possible for a DIY enthusiast to address code P0628 in an Audi by following proper diagnostic procedures and repair steps, but professional help may be needed for complex issues.

9. Will OBDII code P0628 cause permanent damage to my Audi if not addressed promptly?

If left unaddressed, code P0628 related to the Fuel Pump 'A' Control Circuit Low can lead to potential fuel delivery problems, engine performance issues, or even damage to the fuel pump system in the long run, so it is best to address it promptly.

10. How long does it typically take to repair OBDII code P0628 in an Audi?

The time needed to repair code P0628 in an Audi can vary based on the exact cause of the issue, the availability of parts, and the repair process involved, but it may take a few hours to a full day to complete the repair successfully.