edge8600

I just installed my xpipe and i do have mil elm. and i was wondering it would trigger the service engine soon light?

stevednmc

If you installed them right it shouldnt be the cause. Get your codes read and post them.

edge8600

yeah they are installed right, ill pull the code tommorrow.

uberstang1

Sometimes those MILs don't work.

edge8600

Thats what I'm thinking, its a p2272 pulled the code.

Tac2cul

i would guess your MIL may have issues

check this forum link https://mustangforums.com/forum/4-6l...ine-light.html

stevednmc

If you have a tuner just shut those O2 sensors off and be done with it. IS it a new X pipe or did you buy it used? Same with the MIL's.....?

edge8600

both new.

cliffyk

P2272 indicates non-switching of the driver's side rear sensor, it could be that the sensor is dead or dying. As they fail the output voltage falls, the MIL eliminators work by further reducing the sensor's output voltage, a combination of a dead/dying sensor and a MIL eliminator would trigger P2272.

Read more about O² sensors here, and more about MIL eliminators here.

edge8600

I went under the car and make sure everything was plugged in right and no wires twisted etc... reset the light and it came back on 5 miles later guessing its a dead sensor.