Some quick advise on these codes
03-02-2007, 04:49 PM
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Some quick advise on these codes Hey guys, today the car started running rough at idle like its missing. I am showing codes PO171, PO131 and PO30....171 is system too lean (bank 1) 131 is 02 sensor circuit low voltage (bank 1 sensor 1) and the PO30 is showing unknown, I am assuming its a PO300 possibly.
I am also assuming that bank one is the drivers side, and that bank one sensor 1 is the drivers side front 02 sensor....is that correct? The real question is this....why is it showing these codes, is the 02 sensor bad?
This started after I took it through the car wash the other day and I thought whatever it was would dry out with a little time, but no luck. Any help is appreciated, thanks Ron.
I am also assuming that bank one is the drivers side, and that bank one sensor 1 is the drivers side front 02 sensor....is that correct? The real question is this....why is it showing these codes, is the 02 sensor bad?
This started after I took it through the car wash the other day and I thought whatever it was would dry out with a little time, but no luck. Any help is appreciated, thanks Ron.
03-02-2007, 05:53 PM
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No data logs, but am getting ready to go to the garage now to check the fuel pressure...I guess it could be the FPR or the fuel filter causing the lean condition,but I am open to ideas.
03-02-2007, 06:00 PM
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You could also try to unhook both front 02's and see if it makes it run like it did before. And bank 1 is always where #1 cylinder is and O211 is pre-cat. It would be pretty hard to tell you what is going on with no data.
03-02-2007, 07:54 PM
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Well, I can log some data via LS1M and post it up. I'll log some idle time and some light drive time and see what you think. I should have it later tonight. I did however check the fuel pressure and its within specs, although at the lower end of the curve. Thanks, Ron
Last edited by Rons 5.3; 03-02-2007 at 08:02 PM.