2002 Toyota Corolla Q&A

2002 Toyota Corolla Question: toyota corolla 2002 code p0171

check engine light -
Answer 1
po171-bank 1 system lean.Start by checking for vacuum leaks.Don't fall for the oxygen sensor diagnosis that many parts stores have told many of my customers.9 times out of 10 it is a vacuum leak. -
Answer 2
in agreement w/ bmdouble as most likely-will add contaminated maf sensor/restricted fuel filter as other possibilities if no vacuum leaks are found. -