po171/po174 what could cause this?
09-23-2007, 12:07 PM
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po171/po174 what could cause this?
Last night my ses light came on in my truck, so I went home and checked the codes. PO171 and PO174 came up (system too lean bank 1 and bank 2). Could the maf be causing this? I'm not too bright, but that was the only thing I could think of that would cause a lean condition on both banks. I cleared the codes this morning and drove it a few miles, and they haven't came back yet. Just wanted some opinions so I can try to get it fixed, I need it to haul the camaro for a heads/cam swap next week!
09-23-2007, 01:15 PM
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Same thing happened to me, I cleared the code 6 months ago and no issues at all since...i think its due to me splicing into my 02 signal wire for my air/fuel gauge?
09-23-2007, 01:59 PM
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Ah, I had an o2 wire rub the front drive shaft until it wore it in two. When I found it I just used a butt connector to fix it instead of buying an $80 bosch sensor. That was about a year ago though, but it might have something to do with it.
