my truck is a 2002 chevy s10 truck 4 cylinder how do i fix code po178 or po179

Question

my check engine light is on and codes came up can i use a flex fuel bypass to pass smog check

Answer 1

P0178 Fuel composition sensor low input

P0179 Fuel composition sensor circuit high input

No you can not bypass the , flex fuel composition sensor, If you disconnect the FCS (fuel composition sensor) you set a circuit high code condition, you can either replace the FCS or clear the code that is set, and reset the monitor ,