LEXUS:LS400:TO:UCF20:ENGINE:始動せず:FUEL PUMP:DTC:P0171:TO:UCF20:ENG:
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http://blogs.yahoo.co.jp/saksak12na/26369582.html
http://us.lexusownersclub.com/forums/index.php?showtopic=29091
I've been lurking around here for awhile trying to self diagnose a CEL and trac off prob...
It gives code of P0171 Bank one lean, I started with cleaning the MAS with TB cleaner and drying it out..Disconnecting battery for 15 mins to clear CEL.. Car has no power at first but will start to regain its old self after a few miles... I think this is the result of the MAS being cleaned..
The CEL and trac light came on again..
Does this mean that the MAS is garbage get a new one since cleaning it didnt fix it? and to buy a new one for $250 ish?
If so what is a good internet store for them?
How do I discern that it is the MAS and not one of the three O2 sensors?
I looked around the bay for loose hoses for a vac.
leak but I really dont think that is the prob
Should I buy a new MAF and hope that fixes it or should I go the O2 route first and replace those?
Thanks for the input
Posted 22 May 2006 - 09:17 AM
Interesting... Did the dealer tell you the knock sensor was a problem first?
I am planning on taking the car to Autozone for a error code.
The dealer specifically told me the MAF and the Knock Sensor was bad.
It is rare for the MAF to failed at 90k miles on the car.
It is rare that this unit fails at all.
Now, I need to know if it is the O2 sensor or the Knock sensor.
