Engine light on
Thread Starter
Driver School Candidate
Joined: Dec 2006
Posts: 46
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From: Ky.
Engine light on
Engine on then off,then on and stays on. I took a reading with the code reader and it said PO171 System too LEAN (BANK 1). COULD IT BE A FUEL SENSORor the Spark plugs. The car has plenty of power.
CL Community Team
Joined: Apr 2004
Posts: 17,338
Likes: 213
From: Miami, Florida
MAF sensor is a possibility. A/F sensor would normally be the the case if accompanied by another code. P0171 is the most common type error on RX300s as far as cels, see this recent thread, https://www.clublexus.com/forums/sho...d.php?t=290791
Most of the time the sensors just detect a brief condition out of its ratios and it pops the light. That thread above indicates how to check the MAF and also resetting the light. Gas cap not tightened enough and a disconnected air hose to the back of the air box can also be a possibility.
Most of the time the sensors just detect a brief condition out of its ratios and it pops the light. That thread above indicates how to check the MAF and also resetting the light. Gas cap not tightened enough and a disconnected air hose to the back of the air box can also be a possibility.
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GS300noob
GS - 2nd Gen (1998-2005)
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Apr 6, 2012 11:51 AM
