hey guys, i just pulled my codes after an ses went off. the codes that i got were 13(left oxygen sensor error, bank 2) and 77(output driver module fault-fan 1 circuit). now, for the corrections-let me know if i'm wrong. for the code 13, do i just have to replace the oxygen sensors? and for the 77, do i just have to replace the relays under the hood. i do have the manual fan mod, from what i've read from searching is that this might trip this code. is that true, and if so, would it trip everytime i use the switch? thanks guys....

 

DTC 13 = Bank 1 (left) Heated Oxygen Sensor (HO2S) Circuit (open circuit)

Could be a faulty sensor, could be a wiring problem. Swap the left and right sensors to see if the problem follows the sensor (sensor problem) or stays where it was (wiring problem).

Not sure how your fan switch interacts with the fan control system. Shoebox knows the answer to that one and has a "fix" on his website, I believe..... if that's the problem.