I recently bought a used 535I xdrive 2010 and at times the engine loses complete power with a display of “ fuel pump malfunction” the car has 109K miles and runs fantastic besides this issue, after it looses power it’ll turn back on after 15 minutes of waiting, I recently changed out the fuel pump module located in the tank on the passanger side, and the HPFP with a new low pressure sensor.

My EKPS system is the EKPS3 and It came with the car so i’m unsure if it’s coded to the car or not, but it reads times “ Voltage current to high or to low “

I’m unsure what else could cause the issue i use INPA, NCSExpert, and Dr.gini to help diagnose anything and unsure what else to look for

 

Have you had you alternator and battery checked

 

They read fine, I wouldn’t think it’s the battery i recently just changed it for a new one recoded by BMW of manhattan, but this fuel issue has been going on for a while and I can’t quite find the issue

 

You say you use Dr. Gini.

In Dr. Gini when you go to the gauges icon, it displays about 20 gauges.

One of the gauges is fuel rail and fuel pump.

Are those 2 gauges telling you anything noteworthy?

 

The Fuel rail is between 4700-5000HPA and the fuel pump reads at 1.0 but it never moves i’m not sure what that means or if it’s suppose to do that