A/F Sensor Continues to Fail
#1
Driver School Candidate
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A/F Sensor Continues to Fail
I recently replaced the A/F Sensor after the CEL codes read P0125, P1133 and P1135. I bought this 99 ES300 from my uncle about a year ago. He was the original owner and kept EVERY service receipt. I dug through the records and found where he had the A/F sensor replaced numerous times. The last being in June of 2016. This is exactly what I just replaced in the vehicle. More searching found that he replaced it in 2015 as well. What in the world would cause the A/F sensor to fail so many times?? The codes were cleared and would not reappear for several months. Thanks
Last edited by Matt1; 08-18-17 at 07:53 AM. Reason: grammer
#2
Lexus Champion
What brand parts were used?
#4
Lexus Champion
I don't know what think, can't imagine bad wiring or even a bad ECU killing the sensor. Exhaust getting too hot?
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#8
Oh, okay. It's a crap-shoot on eBay with fake "Chensos," and Amazon's having problems with fake parts as well (personal experience with Amazon, sellers sold me fake VVT solenoids).
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