Engine: 3.2: 06 3.2 XC90 Codes P0087, P0172 and P0175

[jamesholley]

Hello all

I need some assistance in working out what could be causing these codes to be thrown up.

I first saw them on Christmas Eve, no issues felt with the engine.

But my code reader confirmed

p0087 fuel rail/system pressure
p0175 system too rich bank 2
p0172 system too rich bank 1

I cleared the codes down, but four weeks later the CEL has come back on and I suspect that the issue has re-occurred.

The engine is seeming to make a two tone noise when I drive it, but it doesn't feel sluggish and appears still responsive.

Any help or suggestions on what to check would be greatly appreciated.

I have just moved house at great expense, so would prefer not to have a trip to the local garage.

Thanks




James