HOW TO KNOW IF OXYGEN SENSOR IS BAD GOOD MAZDA 2 3 5 6 CX-3 CX-5 CX-7 MIATA

[@WorldMechanics]

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[@pauldaniel100]

How about downstream O2 sensor, how to verify if it is good or bad?

[@bestclarkesspot]

Thank you for sharing this. My Mazda 5 down stream sensor is reading O2B1S2 (V) is 0.000 Does this means it's bad?

[@tianl98765]

Can you please do the downstream sensor too?

[@nickkelly8795]

hi i have a made 5 sport diesel, i am getting no reading from my oxygen sensor, and my car won't rev past 1000rpm love your channel, its been a big help ,,,

[@danielrosario4997]

Have cx9 2011 with c o de p219a could that be a bank 1 sensor waiting on help me out

[@todaysupdate6824]

Hi, my check engine light on today . It say catalytic converter defect . But I have change it one month ago . Anyway I erase the code and check engine light gone . So my question is will it come back again. If so how long it will take to come back. Thanks Golf 5 ( 2008 ) 1.4 patrol engine I drove with bad kat about a week but no engine light on and after I drove another week without Kat no engine light on . When I change my both Kat and drove 500km not engine light. Then I put fuel injector cleaner and drove another 150 km . And after engine light on and it says on my obd2 Kat defect .

[@danielrosario4997]

How I do check test the evap purge vslce solinoid eith a obd 2

[@LarryJohnson-e9g]

I have a 2007 Mazda 5 I put a new upstream 02 sensor it's still saying no activate bank 1 sensor 1 what do I need to do going crazy

[@Crnigruja]

If current is 6.25mA always is that mean O2 sensor is bad? Also it's always open loop not enough temperature.

[@linlinsure3151]

Hi Sir, may I ask my mechanic told me that he couldn't take out the old sensor from the engine, it was too tight & he said it was a little bit lose but couldn't turn out anyone. What should I do ? Pls advice. Thanks

[@sawo1337]

You need a new mechanic.

[@cbrrebates]

Could fuel injector cleaner cause P013A ?

[@Winter_Lakes]

Did you found the problem, i also got the same code on my mazda 2

[@cgsulitdiagnostics8428]

Thanks, love your video, love your enthusiasm 👍👍👍👍👍

[@Boysranch211]

I have an electrical connector I don’t know what it goes to..can you help figure it out ? I can send a pic of it

[@Djunturica]

My downstream sensor on my mazda 6 2007 is showing its values in mA. What to make of that, should it be like in Volts, showing a straight line indicates the CAT is doing its job and both of the components are working correctly?

[@cholitagreen3976]

High i have a Mazda 3 2016 and have a code saying 0421 “warm up catalyst efficiency below threshold (bank 1) What should I do? The check engine light comes and goes plus i used cataclean a week now and the light popped back up 😢

[@stabberstabb178]

It's the same with me.. I checked the top sensor and it shows this >>> kzbin.info/www/bejne/qZWze5mjnb9knbM

[@nxc2685]

Hey i have the same car and code. What did you end up figuring out?

[@EuromixinTwEaKs]

What happens if the upstream sensor 1 b1 is just constantly fluctuating?

[@Trippy_Hippy89]

I have a 2010 Mazdaspeed 3 with a high-flow catalytic converter I keep getting p0139. I have replaced 2 brand new sensors now and it won't go away. Its been a headache.

[@adrianglzlicona]

try installing spark plug spacer ,its same thread size . that's what we do in mexico

[@Trippy_Hippy89]

@@adrianglzlicona The Mazdaspeed 3 Platform is hit or miss with the plug spacers. I have tried it with no success. I ended up just getting a used OEM cat from a member in the Mazdaspeed community for free to pass emissions and all.

[@terencebailey412]

Hello can u please help me with my mazda 5 diesel 2008 Sport dose it have two lambda sensors/ oxygen sensors and do u know the locations of these please

[@LITTLEROCK2517]

No

[@catchaser52]

My Mazda5 is Perfect 4 me.

[@nathanmazhanga1171]

Hi there I'm stuck with code P2187. Need some help pleased

[@SulithaNdawanje]

One has 5 wire while other has 4 can it work

[@juliuSZcsgo]

how about sensor 2? My o2s s2 sits at 0 all the time, and dont move.. i got the error "P0131: O2 Sensor Circuit Low Voltage Bank 1 Sensor 1", and I have changed the sensor 1 two times already, and still not working.. i have no idle at all. anybody who can help? I have checked vacuum leaks, new air mass sensor, new spark plugs, new mass flow sensor, new EGR-valve, new throttle body and new o2sensor 1. sensor 1 is just like in this video, so it's working for sure. I have mazda gt 2.3l 2002

[@spolo123]

Sometimes it can be a bad wiring harness or just bad contact

[@mohdhamad9658]

Hi man. I have 2012 Elantra with P2096. Are sensor was replaced no air leaks. Sensor 2 seems working fine. When I clear the code, it comes back around 15 miles. No driving issues but poor gas mileage. Any help would be great

[@mohdhamad9658]

Air fuel ratio sensor was recently replaced

[@salahalarefi5055]

Check the air filter cap it should be close tightly

[@kudalaut.official]

my car's check engine is on. when I scan using a blutetooth OBD.. the error message: P2096 "Post Catalyst System Fuel Too Lean" how to fix it? thanks sir

[@joshuabranson74]

Could be many things probably a vacuum leak do you have a way to check vaccum? Look under hood check all hoses make sure none are dry rotted or leaking. If you dont have vacuum pressure gauge buy brake cleaner and spray around the top of the motor around the intake plenum air vacuum hoses if car tries to idle weird or stall out when you found your vacuum leak.

[@8power0]

THE GRAPHING ON THAT SCANTOOL LOOKS A LOT LIKE THE SNAP-ON SCANNERS . WOULD BE GREAT TO SEE A REVIEW OF ONE OF THE TOP FOXWELL TABLET BASED SCANNERS . THANK YOU FOR YOUR TIME .

[@sen5908]

Looking for something that I can plug in to see how full my DPF is , regarding soot levels , can you point me in the right direction please, not to expensive 😂

[@viper8177]

My 2009 Mazda 3 has been misdiagnosed a few times by different garages including a Mazda garage. The fault code is P0134. I keep paying for new Oxygen sensors all the time and the warning light comes straight back on when I get the car back. The issue is definitely not the O2 sensor. It has to be something else. I also had the bulkhead replaced last time by Mazda for a vacuum leak after they charged me for a new O2 sensor again which didn't fix the issue. The warning light came back on again a short time after getting the car back. Do you have any idea what it could be beside the O2 sensor? I don't believe that I keep having brand new O2 sensors fitted by different garages that are all faulty. I think this is a nice money-making scam for Mazda. If I want to test my O2 sensor I think my device only tells me the codes. Do I need to buy this same device you have or is there a cheaper device that can do the same thing?

[@BlckHippy]

Literally have the same exact problem..any solutions?

[@danpokorny1342]

Some says it can be by crapy paper air filter, some says it can be due to wrong EGR valve or MAF sensor and few of people using "M18x1.5 Lambda O2 Oxygen Sensor Extender"..this is my internet research...

[@beejhay1234]

What if it stays at 1.015

[@cuteguineapigs3908]

I can not understand this guy.