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oxygen sensor ??

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  #1  
Old 07-15-2014, 02:58 PM
mrbb1 mrbb1 is offline
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Default oxygen sensor ??

Ok I recently had a new trans installed in an 06 2500 hemi/auto
since the install, been having issue's
one being I keep tripping an service engone code
that
reads stating I have a bad oxygen sensor( auto parts store read code for me, doesn't state what Oxygen sensor is bad, just that one is)
is there any chance these codes are being caused by the new trans ??

reason being, codes didbn';t happen till trans was installed
and I live in an emision state and my state inspection is due next month so have to solve issue ASAP
trans shp says . NO, no way for trans to cause issue's
none of the lines seem damaged oroff
so??
I am no tech, so any feed back would be welcome
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  #2  
Old 07-15-2014, 03:32 PM
p38251 p38251 is offline
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Check the connectors. Plugged in, or maybe a plug was damaged during trans swap.
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  #3  
Old 07-15-2014, 04:40 PM
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Maybe, but I'm not too convinced it's an O2 sensor. The code itself gives what O2 sensor is failing, ie: P0130 is a Bank 1 Sensor 1 failure, etc.
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Old 07-15-2014, 04:46 PM
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Ya, something isn't adding up. As Hammer said, if there is an issue it usually states which bank and sensor. You need to get the actual code to be able to start diagnosing.

Alot of people think the codes tell you which sensor is causing an issue, which it isn't. It just tells you where the issue is reported. So just because it is an oxygen sensor related code coming up, it may not be caused by a failing oxygen sensor. An "oxygen sensor code" could be anything from a broken wire on the heater circuit, to a bad Catalytic Converter, to a bad oxygen sensor.
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Old 07-15-2014, 04:56 PM
mrbb1 mrbb1 is offline
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OK thanks, the guys at the auto parts store, theer reader didn't say much, just that it was an oxtgen sensor issue

I checked the connections and all are solid, cannot see any damage to any wores either, as I was thinking maybe something was pinched or??? from the trans install
but if I have code re set as soon as motor starts it trips again, and here that is a 100% failure on state inspection, so have to have solved
auto parts stpre suggested I het a dealership up, stating there code reader will pin point the code/issue"
just dropepd like 4500 on this truck, so trying to nOT spend any more than needed
but?
any idea what would cause a OX sensor to fail ??
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Old 07-15-2014, 05:35 PM
cd36c cd36c is offline
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Again, until you can get the P code number for what tripped the MIL, I wouldn't go off of what the parts store says. I have a couple of code readers, and one is a basic $15 thing I bought at a local discount tool store, and even it tells you the P code number of what failed, so theirs should too.

They aren't mechanics and just want to sell you parts, so if it says something related to oxygen sensor, they'll tell you to just replace your oxygen sensor with their $100 sensor and away you go, they don't care if it is actually the problem. I wouldn't trust what they said until you can get the actual number of the code. Try another store, or go back and tell them you want the number. It'll be something like P0131, or P0138.

It seems odd that it trips the code immediately, as your ECU doesn't even listen to the oxygen sensor until it is warmed up, and even then once warmed up most O2 codes take a while to trigger, they aren't instant (for example it takes a couple minutes of constant low voltage to trigger a P0131).

And oxygen sensors can fail for a variety of issues, most of the time they just wear out though. They aren't tough to replace and are relatively cheap.
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Old 07-15-2014, 06:13 PM
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You can read your own codes by following the instructions here:

http://dodgeforum.com/forum/3rd-gen-...code-list.html
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Old 07-15-2014, 09:32 PM
Old Man with a hemi Old Man with a hemi is offline
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Quote:
Originally Posted by mrbb1 View Post
OK thanks, the guys at the auto parts store, theer reader didn't say much, just that it was an oxtgen sensor issue

I checked the connections and all are solid, cannot see any damage to any wores either, as I was thinking maybe something was pinched or??? from the trans install
but if I have code re set as soon as motor starts it trips again, and here that is a 100% failure on state inspection, so have to have solved
auto parts stpre suggested I het a dealership up, stating there code reader will pin point the code/issue"
just dropepd like 4500 on this truck, so trying to nOT spend any more than needed
but?
any idea what would cause a OX sensor to fail ??
Yeah....its 8 years old. They wear out like other parts
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Old 07-16-2014, 11:12 AM
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thanks guys
I understand things wear out, part of life on vehicles for sure
BUT two yrs ago, when they did my emissions test, I was borderline pasing, so, I had a tune up done at the dodge dealer, and had them replace all 4 O2 sensors, as was suggested to help with ???
so, they are only like 2 yrs old
NOT saying a 2 yr old part cannot fail, sure it happens
but was wondering more about if the enw trans had anything to do with one going
and
since both auto parts dealers said there was no code number showing on reader??
and to be honest they wanted like 30 or 40 bucks an 02 sensor, and did say, it might NOT be the issue
they really didn't push me to buy anything? seemed they too were confused by what really was wrong?

so, asking NOW
would a dodge dealers reader be more specific in details
would it actually tell me, what sensor is bad, or if its not a sensor, something else
as I called my local dealer, and they said they charge for a reading??
didn't say how much, but that there is a charge for the reading??
and I don't really wnat to be paying them if there not going to be able to tell me more specific info
as if I have to replace parts till I find the right one, no point in paying more to get same results?
any help suggestions are much appreciated
and thanks for all so far!
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Old 07-16-2014, 11:17 AM
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Quote:
Originally Posted by tantofolder View Post
You can read your own codes by following the instructions here:

http://dodgeforum.com/forum/3rd-gen-...code-list.html
OK I have done this, and right now my check engine light is on, so something has to have tripped it
BUT If I do the key thing
it attempts to ?? I get a readding that just says DONE
no codes again
so not sure again WHY, no codes are showing,as there is a check engine light on, that comes on after its reset, within almost a minute of truck running
yet NO cods show up
just reads DONE??
so, what does that mean?
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Old 07-16-2014, 11:40 AM
cd36c cd36c is offline
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I don't understand, if they are able to tell you it is a potential oxygen sensor issue, there has to be a number showing. Like I said, an oxygen sensor doesn't typically throw a code immediately on startup, so I'm not convinced you have bad oxygen sensors.

Also FYI, only 2 of the 4 oxygen sensors would help with emissions, the other two only monitor the catalytic converter, they don't need to be replaced until they have failed completely, as they in no way control how the engine runs.

I'm sorry, but I can't hypothesize about what may be wrong without that code number. This is all you need to read codes, $15 and free shipping, it'll tell you what the engine code is:

Amazon Amazon

Or go to the Dodge Dealer, and get them to pull codes. Remember a code won't tell you what has failed, it will only point you in a general area, but it will never tell you definitively that Part X has failed and needs replacing.

In the end, it doesn't matter how you get there you just need to know what the exact code is to even start helping.
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Old 07-16-2014, 02:58 PM
mrbb1 mrbb1 is offline
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thanks for the info, and again, both shops said NO number code came up, so?? I'm not sure why, just said Bank 1
and as for emissions, here, if the check engine light is on, its an automatic failure
so even if one 02 sensor isn't a an issue, IF its tripping the code, its a problem for me
I also tried the key deal test to pull a code numberma dn it too also shows NO numbers, just , runs and the then shows'DONe" so no codes showing
I disconected the battrery Poss, and grounded it out, and then the WTO 5 times deal, and cleared the check engine light
ran motor for like 2-3 minutes and NO code tripped, so??

will be taking truck on a drive n a little while and see if it trips on the ride or not?

I was also told some trans issue's will trip codes and NOT show a code
so<<?? after having truck in trans shop for almost a month, and now, this, gets stressful some what!
will try dealer tomoroow to pull a code if it trips again today! and see what they say I guess!

and also I ordered one of the code readers too, but says shipping will be 17-21 days so???
but will be good to have I gather for that price??
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Old 07-16-2014, 03:14 PM
cd36c cd36c is offline
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That code reader can only do engine codes, when we were talking about an oxygen sensor, it would be able to pull that code.

When there is a problem detected with the tranny, it will throw a code as well, the only thing is only some code readers can read a transmission code. The code reader I linked to would not read a transmission code (same for ABS).

I realize that if one O2 sensor is tripping a code it will fail you. What I meant was a "Tune Up" by replacing the O2 sensors, if there are no codes being thrown, only requires you to replace two of the O2 sensors, as the other two do not affect engine performance in any way.

If it stays off I wouldn't worry about it till it comes on again. Drive it and see what happens.
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Old 07-16-2014, 06:12 PM
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OK just got back from about a 35 mile trip
and no check engine light came on??
BUt it did come n about 15 times in the past 2 weeks, so, who know's
don't think its fixed, but, for now??
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Old 07-16-2014, 06:15 PM
mrbb1 mrbb1 is offline
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Quote:
Originally Posted by cd36c View Post
That code reader can only do engine codes, when we were talking about an oxygen sensor, it would be able to pull that code.

When there is a problem detected with the tranny, it will throw a code as well, the only thing is only some code readers can read a transmission code. The code reader I linked to would not read a transmission code (same for ABS).

I realize that if one O2 sensor is tripping a code it will fail you. What I meant was a "Tune Up" by replacing the O2 sensors, if there are no codes being thrown, only requires you to replace two of the O2 sensors, as the other two do not affect engine performance in any way.

If it stays off I wouldn't worry about it till it comes on again. Drive it and see what happens.
OK a question for you
what two 02 sensors would be reading for emisions??

as if I have to replace , I would rather start there with them 2 and then see
but don't know what 2 they are, are they the one's before the cat or after ir? left or Rt side(drivers side being rt)
??
thank appreciate the help
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Old 07-17-2014, 10:47 AM
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Well if it ends up one is failing and causing the code, you replace that one.

If your vehicle is running dirty and you just need to do a tune up and want to replace the O2 sensors, because you suspect they are getting lazy and on their way out, you would replace the two before the cat. The ones after the cat are just for monitoring if the cat is working. Even if the ones behind the cat fail and throw a code, it won't impact how your vehicle runs. but you would fail emissions. For that reason i wouldn't replace the ones behind the cat until they actually throw a code.
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Old 07-17-2014, 05:36 PM
mrbb1 mrbb1 is offline
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thanks, but as of right nwo I don't know what one is actually throwing a code
and after the reset I did
so far about 200 miles and NO check engine light has come on

BUT if it does come back on, I will be hitting my dealer to see if they can pin point what 02 sensor is tripping code
and replace them(or one)
also plan to install a new muffler, as again old one has a few small rust spots and the seam is opening up some at the end
don't think this is an issue as is, but needs to be replaced sooner or later so, have one on its way now, to rule that out any how!
thanks again for all the help/suggestions and information
much appreciated it
will update againn IF I trip a code again
Hoping myabe that , that reset I did maybe corrected something that wasn't quite right or???
for now seems OK
200 plus miles and no trip!/ code!
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Old 07-18-2014, 10:07 AM
Old Man with a hemi Old Man with a hemi is offline
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Quote:
Originally Posted by mrbb1 View Post
thanks, but as of right nwo I don't know what one is actually throwing a code
and after the reset I did
so far about 200 miles and NO check engine light has come on

BUT if it does come back on, I will be hitting my dealer to see if they can pin point what 02 sensor is tripping code
and replace them(or one)
also plan to install a new muffler, as again old one has a few small rust spots and the seam is opening up some at the end
don't think this is an issue as is, but needs to be replaced sooner or later so, have one on its way now, to rule that out any how!
thanks again for all the help/suggestions and information
much appreciated it
will update againn IF I trip a code again
Hoping myabe that , that reset I did maybe corrected something that wasn't quite right or???
for now seems OK
200 plus miles and no trip!/ code!




Go buy a good tuner and it will tell you exactly which 02 sensor is tripping the code. It will say Bank 1 or 2 upstream or downstream or something like that, or it may be something else making the light come on and they will tell you that also. Id say if you have driven 200 miles without a light....you should be good to go....good luck
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Old 07-18-2014, 10:58 AM
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Quote:
Originally Posted by Old Man with a hemi View Post
Go buy a good tuner and it will tell you exactly which 02 sensor is tripping the code. It will say Bank 1 or 2 upstream or downstream or something like that, or it may be something else making the light come on and they will tell you that also. Id say if you have driven 200 miles without a light....you should be good to go....good luck
I did order a code reader yesterday LOL
off AMAZON, but didn't notice till I placed the order that its 14-21 days till it gets here ??
but do have one on its way
I am just hoping I get my new inspection sticker and it stays off till that happens
they charge me pass or fail so, non point in spending money twice if I can !
Thanks everyone for the help and info
much appreciate it!
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Old 07-18-2014, 11:36 AM
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Quote:
Originally Posted by mrbb1 View Post
thanks guys
I understand things wear out, part of life on vehicles for sure
BUT two yrs ago, when they did my emissions test, I was borderline pasing, so, I had a tune up done at the dodge dealer, and had them replace all 4 O2 sensors, as was suggested to help with ???
so, they are only like 2 yrs old
NOT saying a 2 yr old part cannot fail, sure it happens
but was wondering more about if the enw trans had anything to do with one going
and
since both auto parts dealers said there was no code number showing on reader??
and to be honest they wanted like 30 or 40 bucks an 02 sensor, and did say, it might NOT be the issue
they really didn't push me to buy anything? seemed they too were confused by what really was wrong?

so, asking NOW
would a dodge dealers reader be more specific in details
would it actually tell me, what sensor is bad, or if its not a sensor, something else
as I called my local dealer, and they said they charge for a reading??
didn't say how much, but that there is a charge for the reading??
and I don't really wnat to be paying them if there not going to be able to tell me more specific info
as if I have to replace parts till I find the right one, no point in paying more to get same results?
any help suggestions are much appreciated
and thanks for all so far!

How many miles are on the sensors that are "only two years old"? Most manufacturers recommend replacing O2 Sensors around 50-65K miles.

Here's an interesting read on O2 sensors: Oxygen Sensors Technical Information
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Old 07-18-2014, 11:36 AM
 
 
 
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