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Twitching/Hesitating car Passat Variant 1.8T 2002

My car is kinda twitching sometimes, Passat 1.8T VAR 2002, I suspect mass air filter, nox sensor or camshaft sensor

Hey Scotty! My car is kinda twitching sometimes, Passat 1.8T VAR 2002, I suspect mass air filter, nox sensor or the camshaft sensor. Which of these do you think it could be? Got engine light and codes for misfiring cylinders/nox sensor and camshaft sensor.

But I want to know what is the component that makes the car go like this? I've swapped ignition coils and spark plugs.

rather than guess, have a guy like me hook up his dealer level scanner and analyze live and mode 6 data, guessing is foolhardy on a VW

Sorry for a real late reply, I even had a generator breakdown, cost me $60..
These are the codes. However, when I scanned last, I didn't recieve the misfire codes, but I didn't clear the codes before so that could maybe have something to do with it.

P0340, I had one of these sensors lying around in the car, I suppose it's a swapped one or if that had come with for replacement for earlier owner... Can these be checked with a multimeter or something?

P0300 - Random/Multiple Cylinder Misfire Detected
P0301 - Cylinder 1 Misfire Detected
P0302 - Cylinder 2 Misfire Detected
P0340 - Camshaft Position Sensor A Circuit Bank 1 or Single Sensor
P0171 - System too lean Bank 1

P0171, no clue. Lambda?

All the best

Bumping, if allowed.

Swapped the sensor to a new one, problem still persists. Not sure how I can check what's wrong. I've got a multimeter now, aswell. A cable to the sensor could be the culprit.

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