Honda Civic P0131 & 02 Sensor Diagnosis
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Date: 2020-08-05
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Comments and reviews: 10
spelunkerd
I've seen that difference before, comparing scan tool live data vs labscope. I've assumed the difference is a result of a bottleneck in the communication rate between the PCM and the OBD output data port. The PCM is sending a sample of the O2 sensor readings, but of course random infrequent samples of a moving target fluctuate. I like to think it's not an issue with intake communication of the PCM, because otherwise the PCM would have trouble interpreting the info. The OBD port is not part of the regular function for the PCM, the port is there just so lowly humans can glance over the shoulder of a computer. No reason to communicate at top speed.
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I've seen that difference before, comparing scan tool live data vs labscope. I've assumed the difference is a result of a bottleneck in the communication rate between the PCM and the OBD output data port. The PCM is sending a sample of the O2 sensor readings, but of course random infrequent samples of a moving target fluctuate. I like to think it's not an issue with intake communication of the PCM, because otherwise the PCM would have trouble interpreting the info. The OBD port is not part of the regular function for the PCM, the port is there just so lowly humans can glance over the shoulder of a computer. No reason to communicate at top speed.
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Chris
The error with the Varus you're getting is an OutOfMemoryException. This is mostly harmless in terms of the function of the device. Its almost never an indication of a hardware problem in something embedded like this and no need to send it back to snapon. Generally its a software issue due to attempting to do too much at the same time on the device. Either you're overloading it or the software that runs on it was done poorly. Anything on the scope that involves history like taking traces or having lots of browser tabs open will eat into your maximum working memory. Closing down programs or restarting the device should help free things up.
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The error with the Varus you're getting is an OutOfMemoryException. This is mostly harmless in terms of the function of the device. Its almost never an indication of a hardware problem in something embedded like this and no need to send it back to snapon. Generally its a software issue due to attempting to do too much at the same time on the device. Either you're overloading it or the software that runs on it was done poorly. Anything on the scope that involves history like taking traces or having lots of browser tabs open will eat into your maximum working memory. Closing down programs or restarting the device should help free things up.
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Duncan
I think that Snap-On should buy that tool back from you for the price you paid for it including all the repairs and then go find one that works from a different company. I'd be quite upset with that them if I were going through what you're going through. It's just not right. You shouldn't have to pay for repairs on a faulty piece of tech. I'm angry just thing about. I've got to give you credit for being so level headed about it.
Thanks for another fine video, I really appreciate the effort you put out put them together.
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I think that Snap-On should buy that tool back from you for the price you paid for it including all the repairs and then go find one that works from a different company. I'd be quite upset with that them if I were going through what you're going through. It's just not right. You shouldn't have to pay for repairs on a faulty piece of tech. I'm angry just thing about. I've got to give you credit for being so level headed about it.
Thanks for another fine video, I really appreciate the effort you put out put them together.
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Monroe
I just wanna say that even at my age(71) that I look forward to your vids and that only you and my old jewelry teacher, Soham Harrison, care about us viewers being able to see what u see. Also Eric the car guy is in that elite group of Caregivers. Thanks for all u do. The old Choctawman. BTW i've been working around cars since I was a toddler and I'm still learning from pros like you. Thanks again.
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I just wanna say that even at my age(71) that I look forward to your vids and that only you and my old jewelry teacher, Soham Harrison, care about us viewers being able to see what u see. Also Eric the car guy is in that elite group of Caregivers. Thanks for all u do. The old Choctawman. BTW i've been working around cars since I was a toddler and I'm still learning from pros like you. Thanks again.
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VideoGameObsession
We just had the muffler replaced on our '99 Honda Civic and about 2 days later the Check Engine light lit up.
The ODBII gave a reading of P0131.
Is there a chance that the work they did on this might have caused this to happen?
I reset the error, but still need to drive it around a bit to see if it comes back.
Thanks
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We just had the muffler replaced on our '99 Honda Civic and about 2 days later the Check Engine light lit up.
The ODBII gave a reading of P0131.
Is there a chance that the work they did on this might have caused this to happen?
I reset the error, but still need to drive it around a bit to see if it comes back.
Thanks
reply
steubens7
seen a few videos suggesting cleaning the oxygen sensor for some related codes? can you even do that? one method uses a torch to blast off the soot, something you can do when you bench test it. another soaks the end in gasoline over night
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seen a few videos suggesting cleaning the oxygen sensor for some related codes? can you even do that? one method uses a torch to blast off the soot, something you can do when you bench test it. another soaks the end in gasoline over night
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Richard
When you say the STFT is pegged out at a positive number, does that mean the ECM is adding fuel because the O2 is dead or stuck lean? Thank you. I enjoy your videos and have learned alot from you.
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When you say the STFT is pegged out at a positive number, does that mean the ECM is adding fuel because the O2 is dead or stuck lean? Thank you. I enjoy your videos and have learned alot from you.
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fuzzy19111
Between Eric O, ETCG, Scanner Danner and Humble Mechanic. I feel like a team of pros has my back at all times. Saved my butt a few times. lol and more fun than a sub to alldata for sure!
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Between Eric O, ETCG, Scanner Danner and Humble Mechanic. I feel like a team of pros has my back at all times. Saved my butt a few times. lol and more fun than a sub to alldata for sure!
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Juanluis
excellent video. always supporting us with your work greetings from Mexico, hopefully one day you can put subtitles in Spanish, so you can understand more the videos greetings
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excellent video. always supporting us with your work greetings from Mexico, hopefully one day you can put subtitles in Spanish, so you can understand more the videos greetings
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Tech
On that snapon tool. I could make a norton ghost backup so if you have issues you can restore the image or just clone the hard drive. Hit me up id do it for cheep if you cant.
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On that snapon tool. I could make a norton ghost backup so if you have issues you can restore the image or just clone the hard drive. Hit me up id do it for cheep if you cant.
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