Timing Marks Dodge Caliber CRD 2.0L

Hi, i have recently just did a water pump replacement on my dodge caliber as the old one completely seized up on me, and to do it you needed to undo tension on the timing belt to be able to get the water pump out, and when i got everything back together and took it for a drive everything was fine and when i checked for errors on an obd2 scanner it came up with a crankshaft position sensor error. But of course i knew that the issue was my timing is out by the tiniest bit, right? because the engine runs fine no stalling etc, it just needs to be adjusted properly. I can't seem to find a timing mark on the bottom end but i have marks on the camshaft gears, just not the block. Any ideas or diagrams as to where the crankshaft should be aligned? maybe i'm just dumb? i was thinking it had something to do with that cast notch but i'm not sure, i'll try and do some more research and see where it actually lines up, because i haven't gotten much information from diagrams on google images, cheers