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Hey guys,
New to the mps scene.
Recently installed a Cpe dumppipe (with cat) and autotech hpfp internals into my 2011 MS3.
I had to replace both o2 sensors during install of the dump. Im currently running a Cobb stage 2 OTS.
I now have a P2246 ''front HO2S sensor reference voltage circuit high input' which continues to re-appear after clearing...
Car seems to run fine... Any help, suggestions or anyone who can fix it would be greatly appreciated!
custom tune!! from purple drank,freektune etc
I contacted Ryan from PD, told me id have to resolve the CEL before a tune..... i was hoping a custom tune would fix it
Wiring looks fine, sensor is new also....
Oem sensor?
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I didnt use oem sensors....
The secondary sensor didnt throw a cel (which i hear is more common due to the increased flow) so i'd assume the primary is also okay......
Is using an oem sensor mandatory?
No idea, but this thread suggests there can be problems with some non-oem ones http://www.ozmpsclub.com/forum/diagn...-downpipe.html
Doesn't look like a common cel (yeah, 2nd o2 cels are super common). Since its pre-cat, it sounds like an actual problem with the sensor than with the downpipe. All the trouble shooting I can see is about checking wiring of the sensor (e.g. https://euroesi.mazda.co.jp/esicont/...2b7813300.html) and since they were replaced, that is where I would start.
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UPDATE: cel fixed. Swapped aftermarket primary 02 sensor with an OEM sensor. Code cleared. Thanks for your help guys!