2004 Taurus V6 Trouble Code PO174 - Ford Forum - Enthusiast Forums for Ford Owners

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Old 09-14-2007, 06:01 PM
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Join Date: Sep 2007
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Default 2004 Taurus V6 Trouble Code PO174

Problem Solved............I have a OBD2 test result showing a PO174, which is a "System to Lean (bank 2) ". I have been unable to locate info on this code. Can anyone assist with what I can do mechanically to repair this. Check Engine Lightcomes back on soonafter clearing with OBD2. Thanks for any help! PeteUPDATE: I was able to locate info directing me to MAF sensor area and Vacuum Lines. I was going to remove MAF sensor to check when I noticed one of the vacuum tubes leading to/from the MAF sensor was disconnected. I reconnected and cleared TC. The cars runs 100 times better and no Check Engine Light!
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