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1998 Lexus GS400 P0172, P0130, P0133, P0150, P0153

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1998 Lexus GS400 P0172, P0130, P0133, P0150, P0153

Old 11-22-13, 08:59 AM
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ThomasGS4
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Exclamation 1998 Lexus GS400 P0172, P0130, P0133, P0150, P0153

Hey folks,

today, my GS threw these codes. I had troubles with the P0172 a while back, but replaced the pre-cat O2 sensors with Denso units, which seemed to fix it for a while. Now, I'm not sure what to think. Any pointers would be much appreciated!
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Old 11-22-13, 10:12 AM
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thomas.....u know how to search i know u do sir

here's one, start @ post # 9

https://www.clublexus.com/forums/gs-...converter.html

and if that doesnt help, try searching each code individually :P
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Old 11-22-13, 10:50 AM
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Geez Brian, you know me better than that.
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Old 11-22-13, 10:53 AM
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Originally Posted by ThomasGS4 View Post
Geez Brian, you know me better than that.
i tend to think so

lol i was a tad busy so that was the first one i pulled up
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Old 11-22-13, 11:03 AM
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With that have been said, I'll add a few more details:

P0130 & P0133 are associated with the Bank 1 Sensor 1.

P0150 & P0153 are associated with the Bank 2 Sensor 1.

My question is, why would I be receiving these codes when I had both replaced with Denso units a while ago? What else could be triggering this?
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Old 11-22-13, 01:21 PM
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You sure the wiring isn't frayed (filleted)? Could be the old harness going to each O2 sensor is brittle and possibly shorting depending on the vibrations, etc.? I read your long thread on the weird O2 problem that a couple techy guys tried to help you with, seems like if the Denso (which are Toyota OEM as far as I know) sensors worked then, then there's either something causing the sensors to go out, or there is a wiring fault somewhere. Wild guesses of course, just in case you haven't checked those things.
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Old 11-22-13, 02:15 PM
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I certainly wouldn't rule it out, although I haven't had a chance to take a peek under the car.
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