MKV 1.4T misfires problem

[ironhk]

my MKV5 1.4GT turbo + twincharge is misfire,
once the car started and run for around 1-2 mins, the engine will shake
the engine light is flashing.
I check the fault code by VCDs,
P0037
P0030
P0300
P0301
P0304
P0302
P2004
P0036
P0031
P0303

the spark plugs and coil should be fine.

is it the problem from the valve?
please give some ideas.
Thank you.

 

[ROH ECHT]

Seems you have O2 sensor issues per P0036 and P0037 with either the sensors themselves or their wiring...because you have codes for both sensors 1 and 2. You can either test them before replacing...or just replace them both and hope. If the sensors test OK...you need to test the wiring.

 

[ironhk]

Seems you have O2 sensor issues per P0036 and P0037 with either the sensors themselves or their wiring...because you have codes for both sensors 1 and 2. You can either test them before replacing...or just replace them both and hope. If the sensors test OK...you need to test the wiring.

Thanks for your reply
I would like to ask the code for o2 sensor is not becoz of the misfire problem?
It is a separate issue?