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    seagates5's Avatar
    seagates5 Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Oct 12, 2011, 04:13 PM
    I have a 95 Lexus Es300 and I got a P0115 code, how do I fix it?
    I already replaced the sensor with a brand new one, I checked the voltage from the car and its 5V, and I checked the fluid level and its fine, and its not overheating
    CaptainRich's Avatar
    CaptainRich Posts: 4,492, Reputation: 537
    Cars & Trucks Expert
    		  
    #2

    Oct 13, 2011, 06:06 AM
    Quote Originally Posted by seagates5 View Post
    I already replaced the sensor with a brand new one, I checked the voltage from the car and its 5V, and I checked the fluid level and its fine, and its not overheating
    Did you use the ECM for your ground?
    There could be an internal fault that prevents the ECM from "seeing" the sensor properly: the ECM is sending the correct reference voltage but does not recognize the signal when it comes back.
    seagates5's Avatar
    seagates5 Posts: 2, Reputation: 1
    New Member
    		  
    #3

    Oct 13, 2011, 07:28 AM
    Not yet but I think its OK because I checked the temp with my scan tool and the read ing was normal. So I disconnected the sensor and the temp dropped to -40°c. So I think its reading it. I turned off the light and drive 100 miles before it popped back on, when before it would come on almost right away
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