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Re: I have a Dodge Stratus 2004. It has 2.7 L - 6
I will post these one at a time...
Basically this means that an oxygen sensor in bank 1 detected a lean condition (too much oxygen in the exhaust). On V6/V8/V10 engines, Bank 1 is the side of the engine that has cylinder #1.
Note: This DTC is very similar to P0174, and in fact your vehicle may show both codes at the same time.
You will more than likely not notice any drivability problems, although there may be symptoms such as a lack of power, detonation (spark knock), and/or a hesitation/surge on acceleration.
A code P0171 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 may 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 downstream of the MAF sensor.
Possible solutions include:
In the vast majority of cases, simply cleaning the MAF sensor does the trick. Consult your service manual for it's location if you need help. I find it's best to take it off and spray it with electronics cleaner or brake cleaner. Make sure you are careful not to damage the MAF sensor, and make sure it's dry before reinstalling
Inspect all vacuum and PCV hoses, replace if necessary
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Hello Joe Romero, I would like to help you, if you haven't already been helped...first I need to know a bit more on your Stratus...particularly the engine...there are three diffferent : 4 Cylinders C 2.0L MFI, 4 Cylinders X 2.4L SFI DOHC, 6 Cylinders H 2.5L MFI. I'm thinking you have the 6 Cylinder engine since you mentioned distributor...unfortunately, distributor assembly must be replaced in that particular situation.
The Stratus 2.4L engine uses what is called "a wasted spark" ignition system, that feeds two cylinders with the same ignition coil. Havind a pair of Cylinders dead means one of the coils or the module is inoperative. Amclaussen.
P0174 IS FUEL SYSTEM 2/1 LEAN..YOU NEED TO HAVE FUEL PRESSURE CHECKED..SPEC IS 58PSI +/- 5PSI..ALSO CHECK FUEL FOR CONTAMINATION AND MAP SENSOR FOR ANY OIL IN IT..AN O2 SENSOR CAN ALSO CAUSE THIS CONDITION