RPM sensor? crank sensor? help?
 

For almost 2 months ago now, i fixed my rpm sensor because i got faultcode : 1-3-1: Ignition system RPM signal missing

Now i got : 2-1-4: Crankshaft position/speed sensor faulty.

Dont tell me that this is the same sensor?

Got a volvo 740, 89mod, b230f engine.

thanks for any help :)