2001 hyundai santa fe with obd 2 code P0172

Get an OBD reader and check for codes. Faster and cheaper than trying to guess. Likely a bad O2 sensor.

An O2 sensor is never the cause of a fault code P0172, you through your hard earned money away. Read about the code and the possible causes at the link below.

P0172 OBD II Trouble Code System Too Rich Bank 1 YourMechanic Advice

how did you know the TPS was bad? did you break anything (vacuum tube, wire connector) during repair? good ground? was it really clean in there when you installed new TPS? i don't know the santa fe, but did you disconnect the battery during this? you may have to reset the OBD system. if you have the OBD tester i think it has this function, or check usere manual, possibly a combination of actions involving ignition, shifter and/or lights.

In most cases, its an O2 sensor, they go from $20-$100 and its very easy to replace

Fuel Injectors seldom fail and don't need work
or any type of cleaning

Cylinder #5 --- I assume your referring to a
PO305 Codes for a misfire

That is Ignition

do tune up cap , wires etc.. also check coil for this cylinder,

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.

Hi
It sounds like the transmission slipped. You need have the vehicle check for trouble codes and the trans. fluid level.

Steve

NO. You will need someone to connect a code reader at the minimum and get the Trouble Code. That will tell you what system has a problem and then you can trouble shoot from there. Buy a code reader from the parts store.

your guess is as good as anyones. Someone will have to look at this in person.