System Rich

[Akfahad]

I already know I need to do another dyno tune....but every once in a while I'll throw a system too rich code. Every time I throw it tho, it always comes back as Bank 1, Sensor 1....if the system was too rich, wouldn't it throw it on both banks? Just a general question.

[PDX SuperSolara]

Well, if you have a 6 cylinder, you have 2 banks, the rear is bank 1. The system has seperate wideband sensors for each bank and if just the rear bank is running too rich, then it would set the code for that bank only. I would guess you have an injector spraying too much fuel, one in the rear bank may be defective.

[Akfahad]

hhmmm....ok, thanks Jim.

[DatSRBoi]

If Im correct it usually throws the code to the first bank it see and your car goes into safe mode so it doesnt pick the other ones. I think the rear bank usually gets it first because its the hottest area so detonation can cause it to come out first.