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.
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.
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.
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.
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.
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.
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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