Very good.

The reason this is of importance and stood right out is b/c Euro exports to certain countries do not have the N59 Emmisions Diagnostic Module set-up for Legal Emmissions Mandates...so, you can see why the correct info is important to us making a diagnosis..we only have the info you supply......... if you had an open #4 socket, then my very first diagnostic thought is you do NOT have a CE/N59 equipped 124 chassis... when , in fact, you do.................which puts us back on the same page.

Regardless , my diagnosis/steps , although not complete yet, is still the same. I would start with OVP part# verification...........

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A Dalton