2000 Mazda 626 Ran Test On Car Keep Getting Trouble Codes P0171 P0174 Lean

2000 MAZDA 626
74,000 MILES
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KAT626
  • MEMBER
  • 1 POST
we have ran test on the car and keep getting trouble codes of p0171 and p0174, and are lean codes, could this possibly be the pcm, would hate to spend the money if we don't need to.
thx kathy...
Dec 11, 2012 at 11:42 AM
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DOCFIXIT
  • ✓Experienced Mechanic
  • 18,828 POSTS
O2 sensors not switching are correcting a overly lean condition May have intake leak, restricted air cleaner or clogged /dirty injectors
Dec 11, 2012 at 1:19 PM
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