Error Code 4580 - Problem Still There

320d manual 2002 saloon remapped, full decat

i still have error code 4580 Rail Pressure Sensor - Plausibility -Pressure too High, according to the data on inpa my fuel pressure is too high in my fuel rail. I replaced the fuel rail, sensor and regulator with a second hand one from a 2007 320d. It improved it a bit, before the engine light came on as soon as i started the engine but now it only comes on when i drive it and it goes above 2000 revs as if when the turbo is kicking in. Due to my turbo packing in it has been replaced with a refurbished unit but this error remains.

so can anyone suggest what to check next, google searches reveal very little worth mentioning

so things been done -
checked fuel supply and return pipes for blockage, none found
replaced fuel filter
replaced fuel rail with sensor and regulator
replaced turbo (unrelated)

bump, surely someone has a little more knowledge on this??

Originally Posted by mystic.bertie

bump, surely someone has a little more knowledge on this??

This is a U.S.-based Forum....BMW never sold diesel E46s on this side of The Pond, therefore they are pretty much like UFOs to us....

Originally Posted by Fast Bob

This is a U.S.-based Forum....BMW never sold diesel E46s on this side of The Pond, therefore they are pretty much like UFOs to us....

ok cheers for the heads up i did not know that diesels were not sold over the pond. Im not getting any response from the uk forum so having to try further afield