Car idles so low it almost stalls code PO171

Tiny
RIPPA TIM
  • MEMBER
  • 2002 MAZDA PROTEGE
  • 180,000 MILES
When car is stopped and idling it will idle so low that it almost stalls but corrects its self obd code po171 pops up
Monday, January 30th, 2012 AT 8:56 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
P0171 lean condition/ probable causes:

https://www.2carpros.com/articles/repair-lean-mixture-codes-p0171-or-p0174-on-some-manufacturers

1.Vacuum leaks

2.EGR and PCV valve.

3.Low fuel pressure.

4.Dirty fuel injectors.

5.Mass Air Flow Sensor.

6.Oxygen Sensor.

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Monday, January 30th, 2012 AT 10:55 PM

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