Code P0315, does not start?

Hello, this code sets when the Crankshaft Position sensor does not have a learned Variation by the engine computer. Since you have a no start condition, most likely the Crankshaft Position sensor is bad, the wiring to it has an issue, or the engine computer is faulty. When we replace a Crankshaft Position sensor, that is the time we will do the variation relearn procedure. Im assuming you have not replaced the sensor? Its abit odd youre not getting any other codes for the crankshaft sensor. During a failure of the sensor there will usually be a code like P0335 Crankshaft Position Sensor circuit fault, or P0336 Crankshaft Position Sensor Performance. Below are normal Crank Position sensor failures, so this one is somewhat worrisome.
This code suggests that the Engine computer (ecm) has lost its memory of the sensors learned variation.
So a couple possibilities here are, the battery is not maintaining a charge enough to keep the ecms memory alive, the wiring to the ecm has an issue where the keep alive voltage to the ecm has been disrupted (this can be a power to the ecm or a bad ground to the ecm), or the ecm itself has failed for some reason.
To do the Variation Relearn Procedure you need a scan tool that has the special function to do the procedure.
What else is strange, is usually after replacing a crankshaft position sensor the vehicle will start, it wont always run good until the relearn is done, but it will start.
Were there any other codes besides the P0315? And do you have your own scan tool and or multimeter? If you have a multimeter we can check to see if there are any blown fuses and if the engine computer is getting its keep alive memory voltage.
The 2nd diagram is an ECM fuse 15amp in the engine compartment fuse box on the driver side. Check that fuse first.
When you check that fuse, look at the pins where the fuse sits, are they corroded at all? Is there any white or green corrosion in the 2 pins that hold that fuse?
Also I assume the vehicle does crank over, just doesnt start?
Since the vehicle has to be up to operating temperature to do the Crankshaft Position sensor Variation Relearn, checking the sensors harness plug and the ecm power is going to be the first steps in this diagnosis.

https://www.2carpros.com/articles/how-to-use-a-voltmeter

https://www.2carpros.com/articles/how-a-crank-shaft-angle-sensor-works

What code set first?

This is very tough to diagnose with so many codes, this has to be a corroded bulk connector, failing engine computer, or a wiring issue. The Bulk connector X108 is the main engine to body wiring harness bulk connector that should be checked first. Its a 36 pin connector. (diagram 1). Although there are not codes for every sensor in this connector, in the 2nd and 3rd diagrams the Ground connection is shared inside the engine computer.
Also alot of these sensors have a 5 volt feed, and each of these sensors that are setting codes, should be checked to see if there is a 5 volt feed missing or low on any of these sensors. I would start by checking the MAP sensor with the Key On and see if there is a 5 volts on the Grey wire (diagram 4).
The crankshaft and camshaft sensors also work on a 5 volt feed.

These are all the meanings of each code. Considering how many codes there are. The only connector that could effect all these is the X108, unless there is something going on with the engine computer, or if someone possibly jump started the vehicle the wrong way.
DTC P0341
Intake Camshaft Position Sensor Performance
DTC P2228
Barometric Pressure (BARO) Sensor Circuit Low Voltage
The ECM detects that the BARO sensor voltage is less than 1.95V for greater than 4s
DTC P0455
Evaporative Emission (EVAP) System Large Leak Detected
DTC P0113
Intake Air Temperature (IAT) Sensor 1 Circuit High Voltage
Internal ECM or sensor damage may occur if the circuit is shorted to Battery Positive.
DTC P0315
Crankshaft Position System Variation Not Learned

One other thing, depending on where you live, rodent damage is a possibility, mice love to chew on wires in vehicles, The last diagram is where the engine computer is, so look around this area for any mice nests or chewed wires. Also check inside the Air filter box. If you find a nest, there will be chewed wires not far away. Its extremely common, especially if you live in the country.

https://www.2carpros.com/articles/how-to-use-a-voltmeter