Question about 1999 Kia Sephia

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99 kia sephia keeps throwing code PO172 full system to rich bank one. How do I correct the problem? Changed mass flow air sensor changed O2 sensor, fuel filter, and air filter! What else? Thanks

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  • James Erikson Mar 10, 2016

    For me, it turned out to be the idle air control valve's seal... Had to get some gasket maker and put a thin layer, then reinstalled it, works like a new car now.

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For me, it turned out to be vacuum leak. I searched and searched to no avail, then I found the air leak... It was the seal for the idle air control valve. Turns out, it was cracked in a spot. So, I removed the valve and the seal, used a thin layer of gasket maker, reinstalled, and now it runs perfect. No more codes either!

Posted on Mar 10, 2016

  • James Erikson Mar 10, 2016

    I'd also use some kind of can of like, mass air flow cleaner, and spray it to any/all hoses and where they connect. That's how I found the idle air control valve seal was leaking.... I sprayed some mass air flow cleaner for second, and sure enough, the idle started stumbling.

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Posted on Jan 02, 2017

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SOURCE: Want to know what PO172 System too rich bank 1

it means your cars computer is pumping too muchgas into your motor because it thinks the engine is either running lean possibly due to faulty o2 sensors or that the coolant temp sensor is giving false readings and the ecm thinks the car is still too cold.

Posted on Mar 02, 2009

  • 290 Answers

SOURCE: check engine light on

Had the same code with an Expedition. Try cleaning the MAF sensor with some carb cleaner. Here is more info on the code:
http://www.aa1car.com/library/ford_lean_codes.htm

Posted on Apr 13, 2009

  • 290 Answers

SOURCE: Code PO172 Engine servise light on

try cleaning the MAF. More info here:
http://www.aa1car.com/library/ford_lean_codes.htm

Posted on Apr 13, 2009

garputo22
  • 127 Answers

SOURCE: iv changed everything on this kia sephia

crankshaft position sensor

Posted on Jun 05, 2009

  • 257 Answers

SOURCE: 2001 VW Golf 2.0 throwing error codes P0103 & P0172

Vacuum leak somewhere.
Possibly could be the O2 sensor (the one before the cat up front).
I'd search for a vacuum leak since you may have rattled something loose.

Posted on Jul 15, 2009

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99 rx 300 I have trouble codes p0300, p0301, p0303, p0305, po172, and p0171.Stomped


codes p 0300 through refer to misfires on each cylinder with the end number ( 301 is no 1 cylinder , 302 is no 2 cylinder ans so on)=== causes --engine mechanical fault , ---wiring---ignition/ fuel ---injector/s---ECT/ MAF sensor/s ---ECM
most misfires are from injector faults like dirty/blocked tips, low fuel pressure , no pulse or problem pulse from ECM rather than plugs and wires and coils
codes p0171 refers to system to lean bank 1===causes ---intake exhaust leak---air system---maf/vaf sensors ---fuel pressure / pump---injectors ---heated oxygen sensor ( HO2S)
code p 0172 is system to rich-====causes ---intake blocked ---EVAP cannister purge valve ---fuel pressure --EGR system---injector/s ---HO2S
couple these two codes with the misfire codes , I suggest you look at the injectors, fuel pressure (too low) from EVAP problem not venting tank, fuel pressure regulator, EGR system

Aug 17, 2016 | Cars & Trucks

1 Answer

Code PO172 show up on chey uplander


system to rich bank one probably have one injector or injectors delivering to much fuel would recommend fuel system cleaning and replace o2 sensor

Apr 19, 2015 | Chevrolet Chevy Cars & Trucks

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Volvo 2001 s60 t5 can't keep the ralenti rpm at less than 1500rpm, the car constantly shut off.


code po172 is your bank 1 o2 sensor and code po121 is your throttle posit sensor that controls your RPMs .code po102 is your maf -mass air flow sensor. and code 01172 is a throw in code from the others cause problem. you need a o2 sensor and mass air flow sensor and throttle position senor

Dec 10, 2012 | Cars & Trucks

1 Answer

Po172


P0172 CHEVROLET - Fuel Trim System Rich Bank 1

Possible causes- Faulty front heated oxygen sensor

- Ignition misfiring
- Faulty fuel injectors

- Exhaust gas leaks

- Incorrect fuel pressure

- Faulty Mass Air Flow (MAF) sensor

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I have a 99 kia sephia. I've changed the spark plugs and wires my coil wire, alternator, and battery. It's gone from not even turning over to starting on it's own. I did the troubleshooting guide in my...


make sure that your clean air intake is all hooked up correctly this is a common problem because when the mass air flow sensor detects too much or too little air it will try to die or idle rocky also if it is correct look to make sure the air filter is clean if not then replace it.

Jan 23, 2010 | 1999 Kia Sephia

1 Answer

2002 6 cylinder 3.o engine Ford Ranger. Cold start problem. Bank 1 code PO172 and Bank 2 code PO175. System to rich. Where to start checking.


Changed the air filter lately? Possibly defective O2 sensors, but I doubt it. If air filter and intake are clear, I'd check barometric pressure sensor and mass air flow sensors. Get a Haynes or Chilton's for $25 at Pep Boys for instructions on testing these componenets

Oct 14, 2009 | 2002 Ford Ranger Regular Cab

4 Answers

Check Engine light is on my 1997 F150 with a small V-8. The tester returns codes P0171, P0172, P0174 and P0175. What does all this mean?


those codes are for lean engine condition look for vac leaks at the back of engine to the pcv valve could hear hissing noise with engine running also check egr valve to be stuck open also when was last fuel filter changed? hope this helps .

Sep 16, 2009 | 1997 Ford F150 Regular Cab

1 Answer

Check engine light on


P0101 : Mass air flow censor, Air intake is blocked or the sensor is nackered.
P0172: System too rich bank 1. There's too much fuel, probably to do with the air fuel mix. If you sort the air flow meter that'll sort the two.

Cheers

May 21, 2008 | 2001 Volvo V40

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