Question about Cars & Trucks
Posted by Anonymous on
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Posted on Jan 02, 2017
Basically this means that an oxygen sensor in banks 1 and 2 detected a rich condition (too little oxygen in the exhaust).
A code P0172 may mean that one or more of the following has happened:
· The MAF (Mass Air Flow) Sensor is dirty or faulty. Note: The use of "oiled" air filters can cause the MAF to become dirty if the filter is over-oiled. There is also an issue with some vehicles where the MAF sensors leak the silicone potting material used to protect the circuitry.
· There could be a vacuum leak
· There could be a fuel pressure or delivery problem
Possible solutions include:
Make sure you are careful not to damage the MAF sensor, and make sure it's dry before reinstalling
Posted on Oct 07, 2009
The fuel filter on this vehicle is located inside the fuel tank and is an integral part of the fuel pump module assembly. As such, it's not replaceable by itself and can only be serviced by replacing the entire pump module. It's a "lifetime" filter, in theory anyway, but it can plug up if there has been a large amount of crud that has gotten into the tank somehow. The best way to determine if the filter is restricted is to have the fuel pressure tested as part of a road test drive to see if the pressure remains steady [indicating a good pump and ok filter] or drops off [indicating a restricted filter or weak pump] Hope this helps!
Posted on Jun 25, 2010
SOURCE: I'm getting trouble code p1174
i have an 2007 chevy uplander flexfuel i keep getting p1174 also i have replaced the the o2 sensors and the light keeps coming on
i belive it has something to do with the fuel injection system
Posted on Nov 04, 2011
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