Signs of Bad Oxygen Sensor (O2 How to tell it is time for replacement)

Signs and symptoms of bad oxygen sensor. If you're experiencing poor gas mileage, poor engine performance, check engine light on, sluggish acceleration then there is a good sign the O2 sensor is failing or becoming lazy and should be replaced.

Top5autorepairs
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[iilisette]

with all the sensors and bloatware on new cars I give them a hard pass! Adding in your observations on parts failing and info is much appreciated. I'll take this opportunity to put in some new censors here soon myself as I had some misfire issue I mended with new fuel injectors but w/e gets me better gas milage and extends the life of my ride cause I sure never wanna be working under an electric car. thx for the the info

[iciz]

Your videos help me so much even though I just started getting into cars !

[suedereed]

Very straightforward very knowledgeable. thank you

[precisiont]

One of my oxygen sensors is reading a negative value. It's throwing off my air fuel ratio. Bank one has +25 fuel trim and bank two has -34 fuel trim. Is it the oxygen sensor? No check engine light. I have many if tv symptoms you mentioned.

[kassimguhad]

Hey keep past bro it’s really helpful all ur past

[carlloeber]

I heard you say that it misfires but you didn't say that the misfire was caused by the O2 sensor.. I have a very bad misfire.. and it read bad O2 sensor code
I replaced the downstream on the Gen 2 Prius and it still has a very bad knocking.. it is quite difficult to replace the upstream O2 sensor so I would like to know for sure if it is the problem first.

[Shaz-hobc]

Is the cat 02 and exhaust 02 aensor sane as they look same

[bxtbill]

@Top 5 Auto Repairs I have 2010 meecedes e350. When I scanned it it say bank 2 sensor 1 does that mean upstream or downstream? Driver side or passenger? Thanks for any help

[kentsang]

My bank 1 sensor 1 A/F ratio upstream has smoke after starting my car, what problem could that be . Please let me know, thank you

[NickielNickiel-kgji]

hi sir I have a Peugeot 206 the oxygen sensor complete failed so I replaced it will new one after taking the battery terminal off and putting it back I notice the the RPM counter it's not where it supposed to be in the car have no power but it starts well I don't know what could be the problem in that

[marquez]

I hace a 5.3 Silverado on a cold start it sounds choppy until I rev it a little it goes away, also has a tick. Any suggestions what it could be?

[bretthicks]

Can rear o2 sensor effect your fuel trim to??

[dailylife]

Does it cause exhaust manifold red hot

[EllensCabinetsk]

I'm getting a p0302 p0302 code with good spark plugs and injectors. I had a bad leak in the air intake hose causing it to misfire now I think it's the o2 sensor because It probably went bad try to keep up the bad air/gas ratio. I'm not getting o2 sensor codes just the misfiring codes

[jonathanhawker-kkoy]

Yeah something like this is wrong with my car because it's making a popping sound out of the tailpipe

[ViciousAlienKlown]

You don't need an O2 sensor if your truck is carbuerated