MAGNUM O2 SENSOR DIAG. WITH LAUNCH CRP919E

hey there what's happening YouTube thanks for stopping back to the channel today we're here with the Russell mechanic today we're going to do a pretty quick little diagnosis we've got the good old trusty Magnum in here I know you guys haven't seen this one a bunch but this is the pretty much daily driver car of the Rust Belt for uh the better part of the last three or four months it's pretty awesome 06 Hemi car and we got a bunch of cool things coming down on this one however we are just doing a quick little diagnosis today I had the check engine light come on I believe we have an O2 sensor code and I do have a new scan tool to test out with this today so we're going to talk about the O2 sensor how to do a proper diagnosis of these and how this launch scan tool works [Music] foreign [Applause] [Music] so first off for those of you who did not know if you have these LX based platform cars which is the Magnum charger 300 as well as a couple of other Dodge products we can do a quick check for DTC codes in the PCM how do you do that we have three key Cycles we start in the on position off on off on off on and then we look over here in the cluster and we can see our codes are popping up p0158 was the code that we had pop up and it says done when they're done with them so we know we have a 158 code which is a downstream O2 sensor so our scan tool that we're going to be looking into today is this launch and this is the x431 series and this is the CRP 931e I believe is the model number of this one I just picked this up from for testing just a couple of weeks ago so uh just here to show you guys exactly how this one's working along with the O2 sensor code that we have the first thing I want to do hook the vehicle up to the scan tool and it's going to do an automatic Auto detect Vin scan as soon as the vehicle hooks up now this one doesn't take that long as you guys can see uh ding hits right there 2006 Dodge Magnum and I don't want to do a whole vehicle system scan if you hit the OK button it'll automatically do that one I want to go into our Diagnostics and you can see this covers a crap load of different Diagnostics and everything for all different brands makes models and everything bunch of stuff that nobody is ever going to see but we're going to get up here to our Dodge section diagnosed for Dodge and we'll hit OK so it's going to process 16 pin Auto search the VIN and it's already found the VIN number Hemi v806 Magnum okay and we want to go into our system selection select our powertrain control module and read our fault code and you can see we have a pier015802 sensor 2 2 circuit high so for those of you who not know the exhaust sensors on these cars do a very specific function they will read the oxygen content coming out of the exhaust from the engine that tells the computer pretty much how much fuel and how much oxygen the engine is using and how efficiently it is burning I uses a pump style sensor Willer it will take a reference voltage from the outside available air as well as take a sample from the oxygen gas coming out of the engine it will turn that into a voltage in which the PCM will be able to read now the two Upstream O2 sensors on these cars will read the oxygen content coming out of the engine and that's how it knows how much fuel to put back into it the downstream ones which is the ones that we have an issue with today on this one they're after the catalytic converters and they just monitor how pretty much how efficiently the catalytic converters are working it will it should see a higher oxygen content after the cattle a converter than before the catalytic converter so it knows that the cats are efficiently working so what we're going to do we're going to go back into the scan tool here and we're going to look at how you're supposed to read the different sensor voltages for oxygen sensors okay so for our oxygen sensors we want to get a couple of different readings here and this scan tool I'm pretty sure it does a pretty decent job at doing just so so we're going to want to read our data stream and we're going to look at a couple of different things here we want to see our downstream O2 sensors just to see the differences in voltages on these so we're going to select our one two that's our bank one which is the driver's side on this specific car and our tutu which is the passenger side one so we'll hit OK and it will start to read these now this is kind of suspicious right here these sensors they have what they call a reference voltage when they start reading things and the reference voltage on these is 5 volts so anytime I see a direct see this voltage of straight 5 volts that tells me it may have something that's shorted to reference voltage it may be internal to the sensor it may be in the wiring but normally it's not supposed to read exactly 5 volts we're supposed to be just underneath so that's a little bit suspicious there and that's the one we have our code on also so we're going to want to combine these two and we are going to go ahead and graph them and start up the car now right away we're going to see this thing slowly start to work now the cool thing about O2 sensors they go through a heat phase in which it's kind of a warm-up phase for because oxygen sensor so they do have a heater internal to them a heater does have the possibility of failing but that's a different code that would set all together so the vehicle once it goes through this heating phase this is called uh open loop so open loop is we'll just say a different coding variation of how the PCM makes the engine run while it's still cold after it goes uh through its whole little warm-up phase kind of like an older engine would hit its choke then we go into what is called closed loop and we start to see this difference here in the oxygen sensors so the cool thing about oxygen sensors like I said earlier is they do take a reference voltage and a reference from the amount of air that's in and out of the exhaust system now the PCM will take this voltage and it will ramp it up and down and you will see what we call a switching in the O2 sensors on a downstream sensor we're going to see right around two and a half two three and a half volts it should switch up and down and it should go pretty evenly once we start to see everything going to a more even closed loop cycle now you can see right here in our green we have our uh Bank One downstream O2 sensor and number two uh is our uh passenger side one now you see the green one we've got a pretty even up down up down up down and it is switching very evenly where the blue one you can see we have kind of a flat mark it'll go up higher come down it's not so even so and you can see here is another section where it's kind of getting stuck so it is not switching nearly as fast as the other side O2 sensor now obviously an engine is not going to run perfectly exact from side to side but these things should be pretty even and you should see them switch nice and evenly again you can see here where the green is going up but now up and down and we have a flat line on our blue O2 sensor which is the passenger side one so that tells me right there that the O2 sensor for our Downstream passenger side isn't switching fast enough and based on that and the fact that we saw five volts uh right off the bat at a full reference voltage I think we've pretty much narrowed it down to needing to replace our downstream O2 sensor on the passenger side now this scan tool is something that intrigues you it is a pretty awesome scan tool especially for the amount that these things cost scan tools anymore are upwards of thousands of dollars to be able to get a good bi-directional scan tool and when launched approached me and said hey we've got a really good economy bi-directional scan tool I'm like really is it bi-directional or does it just do some sensor readings and everything they said no it really does system tests and in Chrysler will we have our actuation test and our special functions if you go into this one we can do everything from a forced monitor test that is our EVAP system where it will force the EVAP system to run to check for any large or medium EV athletes it will also do a relearn of an electronic throttle body works great on this one as well as a cam crank relearn in case we replace any of the cam or crank sensors it will do a full reset of each one of the ecu's clear out the variable line pressure counter so the transmission as well as all of your long-term and short-term adaptives for the PCM we can do the normal then check we can see our valid VIN number and that is our valid VIN number on this one and if it wasn't we could rewrite it and we don't really want to do that one so we're going to cancel out of that again like I said I was really skeptical on whether this was a bi-directional tool and it really is for what this thing costs which is like right around 465 bucks I was very surprised at what it could do special functions do our trans uh adaptive memory reset so it'll do a quick learn for these store the Adaptive so we don't clear them all out that's pretty awesome for the transmission functions like I said this is pretty awesome and it'll do all the normal things and all the normal resets that would be for you know like resetting your oil change light something else that I thought it was really cool to do was um sorry I've backed out a little bit too far I want to go in here and look at some of our OBD2 monitors so we're going to our system selection our PCM and art OBD2 monitors so normally in the drb as well as the the y-tech scan tools for these vehicles that would be under OBD2 functions and that's something that most scaffolds do not read this one does quite nicely and we will scroll down here you can see all the different OBD2 monitors that it has available and the one that most people really like to use is which cylinder is misfiring it does the active counting of your rev Monitor and each individual cylinder monitors those for your misfire so you can watch your live misfire counters on this scan tool pretty awesome functionality for a scan tool that's less than five hundred dollars now if the launched crp919e is something that Sparks your interest I will be sure to leave the links for that one down in the description below it'll be a link over to its Amazon store link I believe that's where it's at I'm not sure if they're going to throw any discounts in but if they do then I'll just kind of put them right here I don't know we'll see how uh what they offer for that one overall I would say it is a really good uh buy it does some really nice bi-directional functions for the amount that it is especially being under 500 bucks for a guy who does a lot of at-home work for some customers here and there you need something more than just a little code reader and something that can do minimal resets we need some bi-directional functions to be able to do some of the system tests that we really need for fixing these cars I would definitely recommend at least checking that scan tool out and on these Hemi cars it is extremely easy to do these O2 sensors we can see it is right here hanging out just below the catalytic converter on the passenger side of the car bank one is driver's side Bank two is passenger side the one one would be pre-cat the one two would be post cat same thing for two one and two two the code was for the 2-2 so we're going to grab our 7 8 wrench and get those ones swapped out real quick and easy one other just little tidbit of advice just being that I've worked for Mopar for the last like 14 years well I'm not right now but I used to I do know that these Chrysler products are very picky on the O2 sensors that get put into them and the ones that they do not like more than anything are Bosch O2 sensors especially the extra wide ones those just for some reason they don't work they don't last very well with any of these the variation range of the voltages that they pick up just don't work so I usually recommend sticking with Mopar or ntk which is pretty much a rebranding of what Mopar uses for the O2 sensors so that's the one I'm using today so I went ahead and cleared out all the codes and restarted our graph restarted the car so we can see how much better these things are going to be switching with each other I just started the car up so it is still an open loop and we'll wait for it to go into closed loop here and here we've started to go into closed loop and we're starting to see them switch here more regularly of each other now I am noticing that this blue line is a little bit more jagged than what we were before so it is switching uh very quickly and crispy on this uh new wave level here and shoot that might be to where it's doing so awesome I might need to go ahead and change out the O2 sensor on the other side because it is not switching nearly as fast as this side you can see it switching way better than it was before where it was stuck and now I'm actually starting to see my other side the Bank One Sensor 2 not switch very quick at all it's kind of waving but it is not going up and down very much at all but it looks like we did fix our 2202 sensor and verifying that it is switching way better than it was before like I said just a quick little video showing you what I was looking at on this vehicle when I'm coming into some of the O2 sensor issues when looking at some of these Chryslers as well as some inside Peaks to the launch crp919e hopefully you guys enjoyed this little snippet video today quick diag things if this is something that you guys really do enjoy uh quick little checks of vehicles I know lately I haven't been doing much of those because I just kind of thought that uh it's just quick in and out things people really wouldn't like to see those well if this is something that you guys like to see please leave that down in the comments below and just let me know that or what other kind of things you are liking to see maybe just say stick with some of the tool stuff I don't know let's hear what you guys have to say anyways thanks for tuning in today guys uh it's been an awesome thing coming uh we're getting rolling back into these videos I'm loving it I still have some storage things that I'm waiting on being able to finish for our wrench and for our pliers and screwdriver drawer so those videos will be coming down the pipeline here pretty soon so make sure you subscribe and turn on the Bell notifications so you get notified when I come out with cool awesome content just like this one here today thanks guys and as always stay awesome [Applause] [Music] foreign