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Old 02-02-2018, 06:34 AM
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Default Code PO171, running lean. Bank 1 only

Code PO171, running lean. Bank 1 only
Hi all, a problem has occurred.
Received a po code of 171. Bank 1 shows no data. Because I did not also receive bank 2 of Po 174, I changed the front O2 sensor. Still the same lack of reading any data.
My thought that due to only bank 1 having a problem. There are no vacuum leaks or problems with the air mass meter...
The car idles perfectly, higher rpm's are also very smooth.
Any thoughts or ideas are greatly appreciated.

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