Question about Cars & Trucks
Kia sedona 2003 lx didnt pass smog code p0421 where is this sensor on the minivan
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Bank 1 is the frt side exhaust manifold (did they say bank 1 sensor 1?),you can start by replacing that sensor,i would check the intake for leaks ,the gm 6cly. are known for bad intake gaskets,you will see oil coming out form the frt or rear of the intake,also check your atifreeze overflow bottle for bronwish sludge,which means that the oil is mixing with the antifreeze.A leaking intake could cause that lean condition.
Posted on Mar 29, 2009
oxygen sensor, vacuum leak, and yes it could most definitly be if you swaped the wires of the firing order accidently you will get a code p0171 Check the tubing going from the air filter to the intake manifold to see if it has come loose. This might account for extra air going into the intake manifold than the computer is aware of. Otherwise it may be due to a faulty(or dirty) MAP/MAF sensor. Another possible cause is from low fuel pressure due to restricted fuel lines or a bad fuel pump.
Posted on Jul 28, 2009
Tips for a great answer:
Jan 16, 2016 | Kia Cars & Trucks
Oct 27, 2014 | 2005 Kia Sedona
Aug 12, 2014 | 2007 Kia Sedona LX Minivan
Apr 28, 2013 | Kia Sedona Cars & Trucks
Jan 04, 2013 | Cars & Trucks
Feb 27, 2011 | Mitsubishi Lancer Cars & Trucks
Feb 06, 2011 | Hyundai Santa Fe Cars & Trucks
Oct 06, 2010 | Mazda 626 Cars & Trucks
23 people viewed this question
Usually answered in minutes!