Question about Hyundai Cars & Trucks
Intake tube has leak or mass air flow sensor is bad. check the bottom of intake tube for cracks. use only a dealer mass air flow sensor if no leaks are found. pep boys mass air will kick the same code
Posted on Dec 07, 2013
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Posted on Jan 02, 2017
SOURCE: 1995 jeep engine code
Clean the mass air flow sensor with brake cleaner spray. Throw away the K & N filter if you have one installed. Both are common causes that set a P0171
Posted on Sep 10, 2008
you nead to check all you vacuum lines for leaks it sounds like you have a vacuum leak or the o2 sensor is going bad on bank 1 **** i still say vacuum leak
Posted on Nov 23, 2008
Hi. You need to clean the Mass Air Flow Sensor.
This is an easy job.
Get a can of throttle body or brake cleaner spray at your local auto parts store.
Open the hood, and locate the air filter box. follow the tube from the filter box towards the engine. Look for a small black box with 2 screws holding it to the air tube, Remove the wire connector and observe inside the sensor with a flashlight. You will see 2 small wires, and they will appear fuzzy or dirty. Spray the interior with the cleaner until the wires are nice and clean. Do not use compressed air, you will damage the sensor. Put it all back together and drive it.
This will def fix your issue. This is a vey common problem. If you do it yourself, you will save 70 + bucks.
Thanks for choosing FixYa, and a FIxYa rating for my assistance would be greatly appreciated.
Posted on Jan 23, 2009
SOURCE: diagnostic code #'s p0174,p0171
oxygen sensors are telling you that the mixture is too poor on ur sistem need to check its behaviour and see whats causing that lean mixture
hoope this helps
Posted on Nov 10, 2009
2001 Buick LeSabre 3.8L V6 Check Engine Light come on after driving in 20 minutes,error code P0171.....O2 sensors and fuel filter changed ,how can I pinpoint the source.
Posted on Feb 12, 2010
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