changing maf
Thread Starter
Staging Lane
Joined: Dec 2009
Posts: 99
Likes: 0
From: jacksonville,FL
changing maf so i changed out my maf because my old one went bad so i changed it out and erased the code and my ses light went off but now it came back on and is throwing the same code as before so the guy at advance auto parts says that when i change out the maf i have to unplug the battery to reset it or something like that does that sound right to anyone?
You have something very odd going on here....
The first code is about low MAF voltage. Its not necessarily a bad MAF. It could be faulty wiring or a connector problem. The other two codes are for O2 sensor malfunctions. These O2 problems are usually for issues with the O2 sensors and aren't the typical ones that would accompany MAF problems.
Have you done anything to the O2 sensors lately? You may also want to test the voltages at the MAF connector to see if the inputs to the sensor are correct.
If all these are related, you may have a wider issue with a power problem for multiple sensors. (You could get these codes if your MAF and O2 heaters aren't getting enough power.)
The first code is about low MAF voltage. Its not necessarily a bad MAF. It could be faulty wiring or a connector problem. The other two codes are for O2 sensor malfunctions. These O2 problems are usually for issues with the O2 sensors and aren't the typical ones that would accompany MAF problems.
Have you done anything to the O2 sensors lately? You may also want to test the voltages at the MAF connector to see if the inputs to the sensor are correct.
If all these are related, you may have a wider issue with a power problem for multiple sensors. (You could get these codes if your MAF and O2 heaters aren't getting enough power.)
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Thread Starter
Staging Lane
Joined: Dec 2009
Posts: 99
Likes: 0
From: jacksonville,FL
Well I kno for sure that my 02 extensions for the sensor one of them is burned through all the way because the dumbass that put my headers on never zipped tied them down and they were burned through from the header and while at advance we did a code print out and it said low voltage or the map sensor? Never heard of that before so we tried finding it and never could but I'll look into the wiring thing I might just take it to a mechanic soon and just have them fix it
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just got my pcm back from the tuner and i have the same codes (p0102 p0135 p0155). one of my o2 sensors (bosch 13111) has been shaved through from my zip tie failing and it dragged on the ground. tuner said thats probably where my wiring short is and i am replacing the o2's and ENG SEN fuse in a couple days. i hope that fixes the problem. i'll update
Thread Starter
Staging Lane
Joined: Dec 2009
Posts: 99
Likes: 0
From: jacksonville,FL
Ok so I replaced my u2 extensions everything was fine for about 3days and my ses light came back on throwing the same o2 codes again is there any extensions out there that won't burn sitting next to my headers
get rid of the extensions and run the longer vette o2's. at least then you can rule out o2 extensions. also check all the wiring in the o2 system. they like to melt on the passenger side fenderwell by the header.