VW VR6 GTI (2004) Fuel Relay Circuit Open

[dabuseck]

I recently bought a VR6 and finally got it running after fixing a lot of electrical issues. However, a few issues still remain.

1. Electrical/fuel pump relay problem.
I keep getting a fuel pump relay open circuit code. I've already checked and cleaned all the ground contacts, replaced the fuel pump itself, and even installed a new relay, but the problem persists. Has anyone encountered this or found a solution

2. Low oil pressure.
I replaced the oil pump, pickup tube, filter and added fresh oil but the oil pressure is still low.

I would be very grateful for any ideas and suggestions from those who have encountered similar problems.

 

[vidziuslt]

Have you checked or replaced the oil pressure sensor? Or how did you determine that the oil pressure is low?
What's the cause of many electrical problems? Flooding?

 

[Games Goblin]

Could the oil pressure sensor/wiring be at fault? Do you have access to an oil pressure tester?
On which module do you have a fuel pump relay fault? A quick look at the fuse diagram shows two fuel pump relays. Can you share a photo of the relay box?