P0178 Diagnostic Trouble Code Discussion for October 2004
Fuel Composition Sensor Low Frequency
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| Help Request | Posted | |
| 2001 GMC Sonoma SL 2.2L MIL Lamp on VIN: 1GTCS14591 P0178: Fuel Composition Sensor Low Frequency. Vehicle came in with P0178 P0179. Ran trouble tree and came down to replacement of FCS sensor approx 600 coco's. The code P0178 resets hard after 15 secs which is consistant with diagnostic tree info (12.5 secs.) I Have ingition feed, 5 volt, and ground at all... |
October 19, 2004 |
