I've checked the code and it says P1230 Fuel pump control unit malfunction. Now the car still runs and I still make plenty of power. When I drive the normal fuel pressure is higher then usual. Is there a fuel pump control unit and if so what is the part number I need to replace it? I thought it was just the ECU controlling the fuel pump by varing the pumps power flow. Also the pump doesn't pressurize the line when the car is in the on position anymore but just supplies a constant flow. My car is no longer under warrenty. Motor is a Spec C v7 and the tranny is rebuilt with RA gears.

Thanks,
Mike A

 

Okay there is a fuel controller on the car. Saw another post where someone is having troubles with that and a fuel relay. Now can any one help by pointing me to the location?

Mike

 

Hi I have the same problem n I red today in other blogs that the fuse or relay is located behinds the driver side dash near all the fuses and one in the engine bay that looks pink I had a look in the engine bay and all my big fuses are pink n everything is connected and no blown fuse. Now I have to remove the dash cover under the steering and check the relays there. I'll let u no coz after so much problem I got my car to start.

I couldn't start my par before and 3 garages tested and did **** but no one could find the problem it was my fuel pump hose that connect from the fuel pump to the mettle pipe I replaces the pump and everything brand new with a 225leatres per hour pump from AEM nad the dam thing started and before tha it gave me error codes for O2 sensor and air floe replaces all that now gives me the following error codes

P1094 - tumble generator valve curcuit #1 open curcuit
P1096 - tumble generator valve curcuit #2 open curcuit
P1086 - tumble generator valve#2 (LH)position sensor curcuit low input
P1088 - tumble generator valve #1 (RH) position sensor curcuit low input
P1230 pending - this is fuel Controler unit malfunction
P1094 pending
P1096 pending

So I have to c what the hell is a tumble generator is and what it looks like but some say u can block it but I don't even know what it is. If I find anything just keep me updated. Cheers bud.

 

I'm just getting fed up of subaru now. I could have stick with my Honda integra DC2 which was much more reliable and fast.

 

Unless that dc2 was force fed, or swapped with a huge motor, it wasn't even close to turbo 4 territory. The Tumble Generator Valves are located between the intake manifold and the heads. If you haven't removed them and are getting the tgv codes you should have someone examine the car that can figure out what the actual problem is. You don't want to go disabling codes if the tgvs are stuck closed.

OP: the Subaru factory service manual will tell you how to troubleshoot your problem. I don't have any personal experience with that so I can't chime in there... Google Ken Gilbert- he's got a site with all the FSMs available in PDF form.