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P0178 Diagnostic Trouble Code Discussion for January 2010

Fuel Composition Sensor Low Frequency

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Trouble Ticket Help Requests for DTC P0178
Help Request Posted
2003 Chevrolet Tahoe LS 5.3L Hesitation VIN: 1GNEK13Z33
P0178: Fuel Composition Sensor Low Frequency. I am looking for anybody that has had this code po178 come up before since I do not understand the FCS system well or others that do. Is the sensor in the fuel system/pump or is it regulated by the a/f sensors and is this the actual failure with this code. An...
January 11, 2010