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2003 kia rio stating running too lean( bank 1) replaced ozygen sensor reset check engine light but still cannot get the car to complete the cycle so i can get it emmission tested again......been 4 days cycle asnt completed

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1 Answer

When you replace an O2 Sensor the mil lamp
goes out right away,no need to clear codes
Your car may not do that,don't know
Have you looked at scan tool data for fuel trim
or had a shop back probe all the O2 Sensors with
a scope
I test all parts before & new parts going in,don't learn
anything other wise, or you have your situation
You may still have codes there
You may have a Converter that is worn out & the new
sensor has little oxygen to work with !!!
You may have vacuum leaks or exhaust leaks before the sensors
My question is-- assuming a repair shop is in the mix
Are they not capable of the answers to the fix??

Posted on Jul 27, 2013

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6 Suggested Answers

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Posted on Jan 02, 2017

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  • 14 Answers

SOURCE: Check Engine Light - O2 Sensor - bank 1 running lean

you should have three oxygen sensors on your car, one for each bank of three cylinders; should be towards the Y pipe on each exhaust manifold. Additionally you should have one on the exhaust pipe before the cadilitic converter.

Posted on Nov 20, 2008

  • 52 Answers

SOURCE: bank 1 burning to lean check engine light on flunked state emissions

It is a common problem, you will have to change bank 1, o2 sensor as it is covered in burnt oil and fuel telling the computer to run lean.
hope this help

Posted on Jan 17, 2009

ronaldo_ross
  • 1056 Answers

SOURCE: MY LEXUS IS200 SE engine management light came on

What was the code? lean mixture? If so make sure there is no leak in the exhaust. I have worked on a lexus suv, but it was an 89. It had a lean mixture code. After examination I noticed a exhaust leak which was not apparent at first, there is a section in the exhaust the is very thin, and prone to leakage, causing the lean mixture code.

Posted on Jun 30, 2009

CaptainKeyz
  • 202 Answers

SOURCE: have this code PO171, what does this mean.

Not sure that the O2 sensor was bad. It sounds like it was telling you that side of the exhaust system was picking up a lean mixure at the O2 sensor. The O2 sensor was doing its job by telling you the mixture changed. If the O2 sensor was bad, it would say low voltage range for that sensor, or open curcuit.
Now the car has had time to do its diagnostic sweep, it is telling you the same thing, but from a different sensor...the fuel mix is too lean. Air/spark/and fuel is what you need in the correct amounts. In your car, the ECM engine control module controls this by taking readings from all the sensors several hundred times a second.
Mechanically, you have a few options. Change the fuel filter...under the car on the passenger side. It is an easy job.
Change the fuel pressure regulator. This keeps the fuel at 4 BAR so the fuel injectors can do their job correctly. This job just needs a screw driver to pop off the clip that holds it in place. No hoses need to be removed. It is on top of the intake manifold, in-line with a metal fuel line and a rubber one.
The fuel injectors could be clogged up on one side of the engine. Run some fuel injector cleaner through a tank of gas. Also, listen for a constant ticking sound at each injector. If one sounds off PAR, then replace it.
The fuel pump may not be giving you enough power. However, the readings seem to be localized to one side, so I doubt it.
Start with the easiest thing, and see if it works. Also, you will need to get yourself a VAG scan tool. It is the only one with codes in it for all of your VW systems, not just engine codes like the ODB scanners. You can get a nice one for $50 on-line.
Good Luck!

Posted on Feb 24, 2010

RaidX
  • 632 Answers

SOURCE: My 2003 Kia Optima check engine light keeps coming

P0130 Oxygen Sensor Circuit Malfunction - Bank 1 Sensor 1.
P0131 Oxygen Sensor Circuit Low Voltage - Bank 1 Sensor 1.
P0132 Oxygen Sensor Circuit High Voltage - Bank 1 Sensor 1.
P0133 Oxygen Sensor Circuit Slow Response - Bank 1 Sensor 1.
P0134 Oxygen Sensor Circuit No Activity detected - Bank 1 Sensor 1.
P0135 Oxygen Sensor Heater Circuit Malfunction - Bank 1 Sensor 1


Posted on Jun 23, 2010

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4 codes P0171,P0174,P2195,P2197


Hi
171 system too lean
174 system too lean
2195 - 02 ozygen sensor signal stuck lean Bank1 Sensor 1
2197- 02 ozygen sensor signal stuck lean Bank 2
Sensor 1
The 2 front 02 sensors are located on the front of
the exhaust manifold.
Should solve problem and increase gas mileage.

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