Originally posted by Bridge:
Well I bought a code reader and the codes are from the upper O2's

P1035 - Upstream Heated Oxygen Sensor Heater circuit fault - Bank No. 1.

P1131 - Lack of Upstream Heated Oxygen Sensor Switch - Sensor Indicates Lean - Bank No. 1


Mils were taken apart and done correctly for sure!


HELP!!





mils go on the cat monitoring sensor, the down stream sensor, not the O2 sensors

you need a new O2 sensor

and fyi you need working cat monitoring sensors also since the mil eliminators just block the computer from setting the two pre-cat codes P0420 and P0430


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