So I just changed my brothers trans is his 5 speed 2.4l altima for the 3rd time first trans was leaking fluid, got low and started howling second trans we put in was winding from the junk yard so we got a free one finally put the third trans in and sure enough its leaking from the trans input shaft seal like all the other did, this car is fucking me well, he's just gonna beat it around for a couple months checking the fluid so he goes to get it inspected and we've got 5 codes P0500 VSS P0325 Knock Sensor P0136 O2 Sensor P0335 Crank Position Sensor P1320 Manufacturer Specific I looked up the P1320 and its ignition coil/ignitioon problem Now when i got the car all back together I had 2 small problems. One was I had the wrong plug going to the ignition coil, i switched the plugs and it fired right off. The VSS in the new trans was diffrent so it had to be replaced the following today, and now the speedo works fine. Now this car runs great, lots of power, no missing, just a strong running motor. I don't for the life of me understand why its throwing 5 codes, 3 of which have the potential to make the car not run at all. And to make things even better, either this inspection station was pulling some strange codes, or someone unhooked/pulled the bulb from the cluster because I have no CEL, not even when you first turn the key on. And the battery was unhooked for a few months prior to this so I don't know where the codes came from. Help?