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Innovate part # 3737 Bosch LSU 4.2 5 wire heated O2 sensor. Bosch part # 17014 (0 258 007 057) Will this (before the catalytic converter) O2 sensor work and replace the OME on a 2004 Hyundai Elantra with California emmissions? The original sensor has five wires

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Posted on Jan 02, 2017

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SOURCE: FAILED EMMISSIONS

Hello what you need to do is throw a fresh set off plugs in the motor go to your parts store ask to buy a bottle off emmission pass follow the instructions you should be okay goodluck please rate

Posted on Oct 02, 2008

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SOURCE: Replacing 2004 Hyundia Elantra O2 Sensor

Had the same problem You need to go to dealer and order an O2 sensor with California emissions. The wire will be longer and fit into the prong

Posted on May 08, 2009

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Code p0420 acura m'dx


1996-newer (OBD-II) vehicles use oxygen sensors and a catalytic converter to reduce emissions. There is one O2 (oxygen) sensor in front of the catalytic converter (called upstream), and one behind it (downstream). When the engine is warmed up and running normally the upstream oxygen sensor reading fluctuates and the downstream one is fairly steady. In the case where both readings are fairly steady, a P0420 check engine light code is set.
Possible Causes: Oxygen (O2) sensor not working correctly
Damaged or leaking exhuast (pipe, manifold, catalytic converter)
Damaged catalytic converter
Diagnostic Help:
To diagnose a P0420 trouble code we begin by checking for exhaust leaks under the vehicle. Then use an oscilliscope to check the waveforms of both upstream and downstream O2 sensors. The front reading should vary, the rear should be steady. Replace as necessary. Check the rear Heated O2 Sensor. Check the catalytic converter, replace if necessary. If necessary, check for wiring and component concerns. See our article "Automotive Circuit Testing 101", if you need more assistance with this. Remember to refer to an model-specific repair manual for proper instruction.

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How many oxygen sensors are there on a 1996 ford explorer 8 cyl., 4.0 eng.


The answer depends on the type of exhaust system you have. You will have either 3 or 4 total O2 sensors on your V8. If you have single exhaust with a single catalytic converter then you will have 3 O2 sensors (2 upstream sensors & one downstream sensor - "up or down stream" meaning before of after the catalytic converter). If you have either dual exhaust and/or two catalytic converters then you have 4 O2 sensors (2 upstream & 2 downstream). If you have an MIL light (malfunction indicator light, or "check engine light") the code will indicate "front bank / bank one", which is one of the 2 upstream O2's before the catalytic converter(s), or "rear bank / bank two", which is one of the O2's after the catalytic converter(s).

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Where are the Bank 1 and Bank 2 o2Sensors located in my 2005 Ford Taurus?


There should be a total of 4 o2 sensors. 2 are located on the exhaust, before the catalytic converter and the other 2 will be after the catalytic converter. The o2 sensors look like spark plugs with wires.

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Troubleshooting P0420 OEM Brand Honda A/F ratio concern Air leak near H2OS(heated oxygen sensor) Ignition system concern faulty catalytic converter


P0420 indicates the computer thinks the catalytic converter isn't working as well as it should. This is determined by the PCM evaluating the switch rate of the front and rear o2 sensors. Once the rear o2 sensor switch rate reaches a point close to the front o2 sensor it sets the code. This can be a result of degenerated catalytic converter, or in some rare instances, bad o2 sensors. In most cases repairing this condition requires replacing the catalytic converter with an OEM unit. Aftermarket converters don't have the same quality and quantity of the precious metals that make up the substrate found inside. This usually results in the code setting again in just a few months.

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I have 2005 pontiac grand prix the code p0420 shows up ,Catalyst System Efficiency Below Threshold. now would i have to replace the converter or just maybe the o2 sensors that may have gone bad to cause...


okay, if you replace the converter then i would also replace the o2 sensors along with it,so, replace the sensors first and reset the light and this may take care of problem,if not ,nothing lost then replace the cat,your just doing it in two steps instead of all at once,75% of the time its bad o2s,

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1 Answer

Engine code 430 for 2001 toyota highlander


Possible Causes:
Oxygen (O2) sensor not working correctly
Damaged or leaking exhuast (pipe, manifold, catalytic converter)
Damaged catalytic converter

Diagnostic Help:
To diagnose a P0430 trouble code we begin by checking for exhaust leaks under the vehicle. Then use an oscilloscope to check the waveforms of both upstream and downstream O2 sensors. The rear reading should vary, the front should be steady. Replace as necessary. Check the rear Heated O2 Sensor. Check the catalytic converter, replace if necessary. If necessary, check for wiring and component. hopes this helps thanks

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There should only be two, they are screwed into the exhaust pipes,
One up near the engine, and the other one down by the catilytic converter. Both have wire connectors on them.

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you will need to crawl under the car and look at the mufflers where they come out of the motor and behind the catalytic converter. you will probably have one before and after the catalytic converter on both pipes. You will have to count the wires once you find them. They will be screwed directly into the exhaust pipe.

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1 Answer

Replacing 2004 Hyundia Elantra O2 Sensor


Had the same problem You need to go to dealer and order an O2 sensor with California emissions. The wire will be longer and fit into the prong

Apr 19, 2009 | 2004 Hyundai Elantra

1 Answer

2001 Hyundai Santa Fe - Code P0421 Help!?


code p 0421 refers to warm up cat converter bank 1 --- efficiency below threshold ===causes ---cat converter---wiring ---HO2S (heated oxygen sensor )
there are not 4 oxygen sensor as you have been told but just 2 oxygen sensors located after each of the cat converters
The other 2 are heated oxygen sensor which are located in the exhaust manifold or exhaust pipe before the cat converters
heated oxygen sensors do a completely different job to the O2 sensors in that they report to the ECM, the combustion gas mixture so the the ECM can adjust the mixture for max performance
The oxygen sensors (O2) read what is left after the cat converters have done their job and report to the ECM so that it can fine tune the mix
IF you didn't replace the correct cat converter then that will make the code come back
If you just replaced the O2 sensor , well that doesn't even figure in the problem

Mar 14, 2017 | 2001 Hyundai Santa Fe

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