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Got a 04 Jetta 1.8T with catless dp and wayne block (O2 spacer) and revo stage 2

Pulling these codes.
P0030 Headter Control Circuit (bank 1, sensor 1)
P0036 Heater Control Circuit (bank 1, sensor 2)

Will replacing the upstream (before cat) oxygen sensor fix both these codes?
 

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P0030 Headter Control Circuit (bank 1, sensor 1)
P0036 Heater Control Circuit (bank 1, sensor 2)

Sensor 2 is the main point here...

Just a question, you have HOW many o/2's?
 

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the error's are saying both of them are having issues.

i would start checking the Accessory hardness that exits the cowl by the passenger side strut tower, it runs down the frame rail and plugs into the O/2's.

See if there is any damage there, or something else that would cause the above issues.

Else, start testing from the ECU pins with the o/2's plugged in.
 
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