Hi Pete,

I went to a berlingo recently (same engine as yours) it had the head swapped, it had me scratching my head to say the least.

Mine had the same fault codes as yours with an added fuel pressure code aswell.

The fuel code was due to a faulty FRPS.

It is correct the bosch cam pulley is totally different to the siemens.

The bosch cam pulley picks up off of the actual spokes that make up the cam pulley.

The siemens cam pulley has a seperate pick up that is fixed to the back of the cam pulley.

when I was testing I found this problem seriously screws with the ECU.

When I was scoping the crank sensor at the ECU I found that if I unplugged the middle plug of the ECU then plugged it back in. The scanner would show the RPM signal and sometimes even start for the first crank of the engine only, after the first crank the ECU would seize to send the crank signal to the scanner.

I was lucky enough that the garage had still got the original head and cam pulley, and I quickly realised that the siemens cam pulley could not produce the cam signal I was seeing on the scope.

I believe this is your problem.

BEWARE!!

In my case a bosch head was put on the original siemens block,
When I removed the top timing cover I could see the timing belt was not running true on the cam pulley. It was running off towards the timing belt covers.

The siemens pulley has got a different offset to the bosch pulley. The siemens pulley protrudes further away from the head.

Obviously when I put the siemens pulley on the vehicle the timing belt ran in the center of the cam pulley.

My worry with yours is that if you put the siemens pulley on your vehicle the timing belt may run off the edge of the cam pulley but on the engine side.

This may need checking out.

hth
James