I received the OBDII codes P1337 P1336 during an emission's test and failed. The message that I have found was CSF Sensor No Signal. Is this an easy fix or is this a shop issue? Any help would be greatly appreciated. Thanks all, Mitch
Crankshaft Speed Fluctuation (CSF) Now, I am not for certain but I believe this sensor is located with the crankshaft position sensor behind the lower timing belt cover. It is kind of nestled back in there and though not terribly hard to replace I think they are replaced as one unit for about $200 (parts only). I would consult a repair manual for the exact location.