Hi Paul

My info shows Vauxhall list 6 sub codes for this, may be your scanner cant display true sub code description

As these include 'pressure' issues I would take a look at that side next e.g. filter, low pressure supply and return, injector / rail leak off etc

My thinking is that as this is a consistent fault on over run,it may point to a pressure monitoring issue rather than electrical issue.

sub codes

Fuel Metering Solenoid Valve Circuit High Voltage

Fuel Metering Solenoid Valve Circuit Low Voltage

Fuel Metering Solenoid Valve Circuit Open

Fuel Metering Solenoid Valve Powerstage High Temperature

Rail Pressure Low Pressure

Rail Pressure High Pressure

Cheers Aidan