P1233 code

ANDY L

MEMBER
2002 FORD TAURUS
3.0L
6 CYL
2WD
AUTOMATIC
100,000 MILES

I have check engine light and code p1233 on the OBD2. I have no problem starting or driving the vehicle. Using torque app, I see that the fuel pressure remains constant around 37 psi. Fuel pump driver module Pin 1 has steady 2.4 volts approximately from the PCM and pin 7 shows no voltage to the PCM.

Do I have a bad fuel pump driver module?

1 Reply

KEN L

MASTER CERTIFIED MECHANIC
47,643 POSTS

Hello and welcome,

It sounds like the fuel pump is having a problem. can you test the voltage at the pump? Here are some wiring diagrams and guides to help you get the job done. You can test at the relay will be fine.

https://www.2carpros.com/articles/how-to-use-a-voltmeter

If the voltage is okay the pump is most likely going out. Here is a guide that will give you an idea on what you are in for when doing the job.

https://www.2carpros.com/articles/how-to-replace-an-electric-fuel-pump

I have included some diagrams for what it will be like on your car and a video of how to undo the fuel lines.

https://youtu.be/Boi0DPXVHbM

If the fuel pump is new and the voltage is low then the FPDM (fuel pump driver module) is the culprit and gone out or is having a problem which creates that code.

Here are some diagrams that will show you its location (below).

Please run some tests and get back to us we are interested to see what it is.

Cheers, Ken

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