[SaVAGeSoot]

Immo is what's causing no start.
The cam sensor is an issue, but will only cause longer crank starts\harder starts.... not no starts.
You can see that is all the FF data, you're showing RPM values..... if the ECU can't see RPMs, then you'll have a no start as well (that is, if you aren't already blocked by immo)

 

[SaVAGeSoot]

It's not going to clear the IMMO code, but it's your money and time, so go for it.

 

[SaVAGeSoot]

Not necessarily.

Intermittent

Have you logged the sensor's readings?
Have you verified connections\wiring?
How did you narrow it down to the sensor being bad? Especially when the code itself clearly says...

4113 - Camshaft Position Sensor (G40)
P0341 00 [096] - Implausible Signal
Intermittent - Not Confirmed - Tested Since Memory Clear

 

[SaVAGeSoot]

Looking at the snap shot that it logged when it last detected the code, the only obvious thing that looks out of place is the rpm at 1469 rpm while the engine is sitting at idle

Interesting interpretation..... here's mine

4113 - Camshaft Position Sensor (G40)
P0341 00 [096] - Implausible Signal
Intermittent - Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 21
Mileage: 174467 km
Date: 2023.06.28
Time: 17:59:28

Engine RPM: 1469.00 /min
Normed load value: 27.1 %
Vehicle speed: 0 km/h
Coolant temperature: 61 °C
Intake air temperature: 61 °C
Ambient air pressure: 990 mbar
Voltage terminal 30: 11.826 V
Unlearning counter according OBD: 39
AFS dm: 42.7 kg/h
Mean injection time: 0.797 ms
Engine operating condition-Channel 87: Idle
Relative load value: 17.81 %
Tumg: 26.3 °C
Psr w: 354.06 hPa
Engine torque: 36.0 Nm

Code says it's intermittent and not confirmed - read flaky
It's happened 21 times in the last week - seems sufficiently frequent to suspect a loose wire\connection, or at least warrant looking into that possibility
Idling at 1469 RPM - sure, it's a high idle... but what's your voltage with the car running? Oh that's right.... no where near 14.1-14.3v.... so you probably have an old, weak battery and a weak alternator on top of it..... could it be the ECU has jacked up idling RPM to recharge said battery and perhaps attempt to provide sufficient juice to the rest of the system?

 

[SaVAGeSoot]

I have the maintenance manual which just says to pull the air box out on the respective side but no other direction.

It's useless to have the manual if you don't know how to read it.....
Post page 307 so that I can read it for you

 

[SaVAGeSoot]

I didnt realise fault frequency was from the past week

It's from the time the fault first happened.... which based on the date stamp is roughly about a week ago.... there's no "lifetime" of the code if you clear the codes.... so without looking at the data of when you last cleared the codes, how many cycles ago, etc. all I have to go by is the date\milage stamp on the FF data.... and I also don't know what your current mileage is, so I'm simply reading the date as I know what today's date is