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Summary
  • Diagnostic trouble code (DTC) P0233 stands for “Fuel Pump Secondary Circuitment Intermittent.” The code is triggered once the powertrain control module (PCM) detects an intermittent signal once the fuel pump is activated.
  • The P0233 code is caused by a fuel pump malfunction, fuel pump relay problem, wiring issues, or a PCM malfunction.
  • The common symptoms of the P0233 code include poor engine performance, difficulty starting, and an illuminated check engine light.

The fuel pump makes it possible to move fuel from the fuel tank to the engine’s fuel injectors. The fuel pump is typically managed by either the fuel pump control module (FPCM) or the engine computer (PCM).

P0233 is an error code related to a fault in the fuel pump. Learn more about it through this article. 

What Does the P0233 Code Mean?

Diagnostic trouble code (DTC) P0233 stands for “Fuel Pump Secondary Circuitment Intermittent.” The code is set once the PCM detects an intermittent signal once the fuel pump is activated.

See also  Bad Fuel Pump Symptoms

The fuel pump relay supplies power to the fuel pump. The fuel pump is powered on and pressurizes the fuel system when the PCM (powertrain control module) initiates the fuel pump relay. Some vehicles have a fuel pump supply circuit feedback. This is merely a circuit connected to the fuel pump’s voltage feed. Typically, the splice is situated close to the PCM.

fuel pump being opened
The fuel pump makes it possible to move fuel from the fuel tank to the engine’s fuel injectors.

The PCM keeps an eye on this feedback circuit to make sure the fuel pump is receiving the correct voltage. It anticipates seeing battery voltage on the feedback circuit as it turns on the fuel pump relay.

Note: The definition of code P0233 might 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 P0233 Code?

What are the Common Symptoms of the P0233 Code?

See also  P0332 Code: Knock Sensor 2 Circuit Low Input (Bank 2)

How to Diagnose the P0233 Code

P0233 is a generic trouble code, so various vehicles can log it. But that doesn’t mean that there is a repair procedure that would work for all makes and models.

It’s best to leave the job to a certified mechanic. But if you’re confident you have the tools and knowledge to diagnose the issue yourself, you can do it on your own.

How to Fix the P0233 Code

Fixing a P0233 code can be tricky, especially if you’re not familiar with the repair process. It’s why most people prefer to let certified mechanics resolve the problem because they can ensure that all steps and protocols are followed properly.

However, if you believe you can solve the issue on your own, be sure you are well-informed before trying any fixes. Keep in mind that there isn’t a universal fix that applies to all makes and models. So make sure you consult a vehicle-specific repair manual or online repair database before you get started.

Getting Your Hands on a New Fuel Pump

DTC P0233 is typically logged due to a malfunctioning fuel pump. Fortunately, finding a replacement is easy with the help of CarParts.com.

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The best part? You don’t even have to leave your home to get a new fuel pump. All you need to do is download our mobile app or visit our website. Use our vehicle selector to check for fitment, and toggle our search filters to shop according to your preferred brand or price range.

Shop with confidence thanks to our low-price and lifetime replacement guarantees. All parts are sourced from top parts manufacturers to ensure their performance and reliability.

Enjoy swift shipping, and complete repairs in no time when you shop online. Place your order before noon ET and get your package in as fast as two business days!

Don’t hold out on fixing DTC P0233. Keep your vehicle in good condition by ordering a replacement fuel pump now!

About The Authors
Written By Automotive and Tech Writers

The CarParts.com Research Team is composed of experienced automotive and tech writers working with (ASE)-certified automobile technicians and automotive journalists to bring up-to-date, helpful information to car owners in the US. Guided by CarParts.com's thorough editorial process, our team strives to produce guides and resources DIYers and casual car owners can trust.

Reviewed By Contact Center Manager and Technical Reviewer at CarParts.com

William “Bill” Guzenski has produced hundreds of how-to videos for the automotive community. He’s an ASE Certified Master Automobile Technician, and is affiliated with the Specialty Equipment Market Association (SEMA). He loves attending race events and car shows throughout the country, as well as traveling in his 40-foot motorhome, exploring abandoned mines and ghost towns.

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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