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Question

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Asked: Jan 21, 2009 - 08:19 AM

Status: Closed

cqwakefield

My 2001 Lexus RX 300 is posting scanner codes PO 171, PO 174, PO 1130, and PO 1150. What is the most likely fix?

With the combination of codes listed in the question, what is the most likely cause. Vehicle is currently running rich on fuel. I am located in a cold climate with snow and ice if this has any bearing.

In Maintenance & Repair > Engine > Indicator Lights
In Makes & Models > Lexus > RX 300
1 answer - 308 days ago

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Answers

karjunkie

Date: Jan 21, 2009
Time: 11:46 AM

Edit Answer (for another -38 minute)

Actually, it sounds like you have a lean running condition related to a bad oxygen sensor or a vacuum leak in the intake manifold. I strongly suspect it is just a torn or loose vacuum hose going into the intake manifold. This is a common problem on toyota and lexus cars and trucks. Usually, it is either the PCV or EGR valve hose connection that has cracked or come loose, so check that first.

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