Codes

Tiny
KITZKATT
  • MEMBER
  • 1998 LEXUS ES 300
I have a 1998 Lexus ES300. The code showing up is P0171 – System too Lean (Bank 1). What does it mean?
Saturday, April 16th, 2011 AT 6:01 PM

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.
6. Oxygen Sensor.
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Saturday, April 16th, 2011 AT 8:31 PM

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