P2635 Code: Fuel Pump “A” Flow Performance

Reviewed by

William Guzenski, ASE Certified Master Automobile Technician

Contact Center Manager and Technical Reviewer at CarParts.com

Written by CarParts.com Research Team - Updated on August 17th, 2023

Reading Time: 3 minutes
Summary
  • DTC P2635 stands for “Fuel Pump “A” Flow Performance.” It’s logged when the fuel pump control module detects that the fuel pump isn’t meeting the correct fuel pressure.
  • Fuel pump failure, fuel pump control module failure, and wiring problems are some of the issues that could trigger this trouble code.
  • The most common symptoms of P2635 include a lit check engine light, poor engine performance, and trouble starting the car or accelerating.

If the fuel pump develops symptoms, then your vehicle will likely experience engine-related symptoms. Connect a scan tool to your vehicle to check if your vehicle has triggered the P2635 code.

What Does the P2635 Code Mean?

Diagnostic trouble code (DTC) P2635 code stands for Fuel Pump “A” Flow Performance. Vehicles are equipped with fuel pumps, which are responsible for sending fuel to your engine at the appropriate pressure. The fuel pump control module determines the appropriate pressure to run the engine efficiently, which can vary depending on driver inputs and driving conditions.

If the fuel pump control module detects that the fuel pump isn’t meeting the correct fuel pressure, then the P2635 code will be stored.

The code P2635 will be stored if the fuel pump control module detects that the fuel pump isn’t meeting the correct fuel pressure.

Note: The definition of the P2635 code can be different depending on the vehicle manufacturer. Consult the appropriate repair manual or repair database for the exact code definition.

What are the Common Causes of the P2635 Code?

The P2635 code can be caused by the following problems:

What are the Common Symptoms of the P2635 Code?

Your vehicle might show the following symptoms if the P2635 code has been stored:

How to Diagnose the P2635 Code

The P2635 code is a generic powertrain code that can be logged in vehicles with an OBD-II system. While this code can be triggered in most vehicles, keep in mind that the steps for diagnosis and repair can vary from vehicle to vehicle, as they have different specifications and designs.

If you’re not familiar with the process of diagnosing trouble codes, it might be best to leave the job to a professional mechanic. However, if you’re confident in your DIY skills then you can do it yourself.

This video can show you how the diagnosis may go:

How to Fix the P2635 Code

Attempting to fix a P2635 code can be tricky without the right tools and technical knowledge. There’s also no fix-all solution to any diagnostic trouble code. Under these circumstances, it might be best to bring your vehicle to the nearest repair shop and have a professional mechanic do the job for you. This will ensure that all steps and protocols are followed correctly.

But if you’re confident in your DIY skills, then make sure you’re equipped with the right guides before proceeding. Manuals like those from Chilton or an ALLDATA subscription contain vehicle-specific repair information, so you might want to check those out before working on your daily driver.

Getting a New Fuel Pump for Your Vehicle

Your vehicle’s engine performance will suffer if it doesn’t receive the right amount of fuel because of a bad fuel pump. Good thing you don’t need to bear with a faulty fuel pump any longer because with just a few clicks, you can get the right fuel pump here at CarParts.com.

Finding the appropriate part is quick, simple, and convenient at CarParts.com. You can use our vehicle selector to filter the search results for fuel pumps that are compatible with your car. Whether you have a truck, sedan, or SUV, there’s a good chance we’ll have the exact part that you need. We also have strategically located warehouses across the country, allowing us to deliver your fuel pump in as little as two business days.

To help you spend less on repairs, we provide a price-match guarantee for all of our goods.  Order a new fuel pump from CarParts.com today and enjoy our affordable deals!

Any information provided on this Website is for informational purposes only and is not intended to replace consultation with a professional mechanic. The accuracy and timeliness of the information may change from the time of publication.

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Published by
CarParts.com Research Team and William Guzenski, ASE Certified Master Automobile Technician
Tags: fuel-pump