Getting a P0135 & P0130 code, Changed O2 sensor (upstream)and Code came back, What now?

Question

Recently changed intake manifold gasket. Problems started after.

Answer 1

if the car has an intake leak it will set this code on, also I would recheck everything 

 

possible causes:

- Faulty Front Heated Oxygen Sensor Bank 1
- Front Heated Oxygen Sensor Bank 1 harness is open or shorted
- Front Heated Oxygen Sensor Bank 1 circuit poor electrical connection
- Inappropriate fuel pressure
- Faulty fuel injectors
- Intake air leaks may be faulty
- Exhaust gas leaks