Description
OBD-II Trouble Code Description for P0177 Saab
Fuel Composition Sensor Circuit Range/Performance
What does this mean?
OBD2 Code P0177 Saab definition:
Fuel Composition Sensors are used to determine the amount of ethanol alcohol in the gasoline. Normally, a gasoline engine should not have more than 10% ethanol alcohol in the fuel for proper operation. Some vehicles have a flexi-fuel system on them that allow them to run on up to 85% ethanol alcohol in the fuel. The fuel composition sensor sends a frequency modulated signal to the engine controller which is proportional to the alcohol content of the fuel. The injector pulse width and the ignition timing are modified for the increased alcohol content. It takes almost twice the amount of alcohol compared to gasoline to produce the same power.
Symptoms
Possible sumptoms of OBD code P0177 Saab
– Engine Light ON (or Service Engine Soon Warning Light)
Causes
Possible causes of OBD code P0177 Saab
– Open or short in FF sensor VPWR circuit – Open in battery ground to FF sensor circuit – Open in FF sensor signal circuit – Short to ground in FF sensor signal circuit – Fuel contamination – Short to VPWR in FF sensor batte
Possible Solutions
The OBD2 Code Information Be Applicable For Saab:
2012 Saab 9-5,2012 Saab 9-4X,2011 Saab PhoeniX Concept,2010 Saab 9-5 Sedan,2010 Saab 9-3,2010 Saab 9-3X,2008 Saab Turbo X,2008 Saab 9-X,2008 Saab 9-7X,2008 Saab 9-4X,2008 Saab 9-3,2008 Saab 9-3,2008 Saab 9-3,2006 Saab 9-7X,2006 Saab 9-5,2006 Saab 9-3,2005 Saab 9-5,2005 Saab 9-3,2005 Saab 9-2,2003 Saab 95,2003 Saab 93
Note:
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