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2000 Mazda MPV CEL on

Tiny
IB42
  • MEMBER
  • 2000 MAZDA MPV
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 186,000 MILES
The code retrieved by Autozone and Advance Auto Parts is P0171. 'Running lean bank1.
I don't want to replace the MAF sensor without being certain that's the problem. Could it be the PCV valve or something else? Car runs great, new plugs, wires and intake manifold gasket. The light came on after this work was done.
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Wednesday, April 21st, 2010 AT 3:23 AM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Lean fuel condition could be caused by one of the following below:

1. Vacuum leaks
2. EGR and PCV valve.
3. Low fuel pressure.
4. Dirty fuel injectors.
5. Mass Air Flow Sensor.
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Saturday, April 24th, 2010 AT 11:24 PM

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