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I have these error codes

P1138 - Fuel pressure regulator
P0191 - Fuel sensor circuit
P0201/02/03/04 - Injector circuit, 1,2,3 and 4

I'm not that mechanically minded.
What's are these issues and what do I need to fix them and if possible how?
 

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More detail about the engine would help (size etc).

Also, more detail within the error codes is a massive help - for example pressure levels and other parameters.

At the minute, it would be hard to pinpoint a particular cause of the faults, it looks like it could be the high pressure pump, it could be a sensor problem, could be the accumulator rail.

If you can get hold of the variables, then that would go some way to identifying the issue :thumb:
 
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