Mk6 GTI engine code help

I recently did a carbon cleaning and I thought misfire was gone but it's showing it worse now. Could this be the timing chain?

OBD2 - permanent: P0300 - Random/Multiple Cylinder Misfire Detected P0302 - Cylinder 2 Misfire Detected P2008 - Intake Manifold Runner Control Circuit/Open Bank 1

Central electronics: 01496 - Bulb for Fog-Lamps, Left (L22)

Tire pressure monitor: 01325 - Control Module for Tire Pressure Monitoring (J502)

Radio: 02635 - Tuner not enabled / activated

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