Posted: Wed Nov 10, 2010 9:03 pm Post subject: Po171
This code was visible when I bought the car and I was told it was the Upstream O2 sensor. Replaced it with a AC Delco sensor and the light went off for about 2 weeks. Code came back and it was the same PO171. Had it cleared and I hadn't seen the CEL or the code for about 7 months now. Came on about 2 weeks ago. Had it checked, PO171. Cleared it out and it came back on 48 hours later. Cleared it on Monday and it came on later that night. Before I start going nuts trying to find this, anyone have any experience with this particular code?
No driveability issues or poor fuel mileage.
My experience has been with four cars that I worked on that threw this code, that it may very well be your rubber/plastic intake tube between your air filter and the throttle body. These crack over time and if it is between the MAF and the throttle body, it seems to throw this code.
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