Hello,
Overall I am pleased with the software.
However I am having difficulty finding information regarding the parameter codes in the software for the Oxygen Sensors.
I have a 1997 Nissan Pathfinder with a VG33E V6 engine and manual transmission. This car does have two banks, and I understand that Bank 1 is the side of the engine that contains cylinder #1, and Bank two is the opposite side with cylinder #2.
In the OBD Car Doctor software (IOS, iPhone 5S) for Oxygen sensors it lists the following:
O211 (Bank 1)
O211 (Bank 2)
O212 (Bank 1)
O212 (Bank 2)
O221 (Bank 1)
O221 (Bank 2)
O222 (Bank 1)
O222 (Bank 2)
I am guessing this first character is O for Oxygen and the Letter O with the first number "2" is for the diatomic oxygen molecule "O2".
What I am trying to decipher is the meaning of the third and fourth character (the 2nd and 3rd numbers).
The bank location is indicated by the parenthetical note following the code, and it does not match any of the digit locations (i.e. there is an identical code of O211 for both Banks 1 & 2.
I am guessing that O211 is the code for the raw voltage output for the first oxygen sensor (for OBD-II vehicles with both a pre- and post-catalytic converter this would be the upstream, or oxygen sensor before the catalytic converter) in that bank.
I guess there are some vehicles that have two catalytic converters for each bank so that might be where some of the confusion comes in.
What I don't know is which code pertains to the raw data output for the 2nd Oxygen sensor (the one downstream-after the catalytic converter in the exhaust flow) in each bank. Is it the O212, O221, or the O222?
I checked the manual on the website and could not find this information.
I also tried searching standard OBD-II abbreviations and codes and also had no luck.
It looks like one of the parameters is the ratio between the pre and post catalytic converters expressed in a percentage, but it seems like sometimes that works, and sometimes it crashes the app.
Some of that may be due to sensor feedback delays.
If I knew for sure what the codes meant, instead of trying to figure out which one means what, it would make using the software much more beneficial.
Your assistance is appreciated. Thank you.
