question on po178

[200gmc]

I need a bit of help I have a 2002 Yukon that I drive on the regular basis, last week after taking a 500 mile trip it turned off on me while driving on the freeway auto as soon as I got on the emergency lane i tried restarting it and after 3 attempts it started and today it did the same thing again I put the scanner on it and its giving me po178 code. Fuel consumption sensor low voltage. Does anyone one where is located, oh and the check engine light never came on. But the code showed up on the hp scanner history. Thank you

[flame]

The fuel composition sensor is located on the driver side frame near the fuel filter. Unless you run E85 just tune out the code and set the stoich table to 14.7 across the board.