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DTC P0174: Front Bank (Bank 2) Fuel System Too Lean P0171-1470 General Description The powertrain control module (PCM) detects the oxygen content in the exhaust gas from the front air/fuel ratio (A/F) sensor (bank 2, sensor 1) signal voltage, and it uses fuel feedback control to maintain the...

Do you have access to monitor your pcm sensor input data? If you do check your downstream H02S. This is the one the PCM checks for oxygen content in your exhaust gas and makes feul trim adjustments off of to try to check AF value as close to stryocimetric as possible(14.7/1). It will alter short...