RX - 3rd Gen (2010-2015) Discussion topics related to the 2010 - 2015 RX350 and RX450H models

Front oxygen sensor

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Old 04-20-21, 08:30 PM
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lexuslvr2
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Default Front oxygen sensor

How fast can a mechanic replace a front O2 sensor on a 12 RX350? My ride was in and out in 10 minutes. Price labor and part was $575. Did I just get hosed? Or did they just clear a code and not replace anything? I had the dealer do it so they would have a record.
Old 04-21-21, 03:04 AM
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Mesquite77
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Very fast, it is the easiest part to replace in the whole engine bay, if you open hood and look down between engine and radiator you are staring right at it.


Last edited by Mesquite77; 04-21-21 at 03:09 AM.
Old 04-21-21, 05:33 AM
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lexuslvr2
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Is there a front lower sensor? He did put it up on the lift.
Old 04-21-21, 05:35 AM
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RX in NC
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You got hosed by going to the dealership for this job. Find a well-respected Toyota-familiar independent repair shop in your area and save yourself some money on any future repairs if you cannot DIY.
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Old 04-21-21, 05:47 AM
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lexuslvr2
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Yes, I did research one (which I will use in the future). Some nice Toyota and Lexus mechanics.
It's actually only the second time in 9 years the car has been repaired at the dealer. 1st time was leaking CV joints repaired under warranty.
I just got my dash cam hardwired and this was it's first visit to the shop and I wanted to see what I was paying for.
Just amazing how fast they did it.
But I enjoyed a nice afternoon in a free loaner vehicle. So my butt hurts a little less.
Old 04-21-21, 09:14 AM
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Mesquite77
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Yah, there are 2 sensors per bank, 1st before cat is A/F Sensor, and after cat is O2 sensor. All are not difficult to get at.
Old 04-21-21, 10:53 AM
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ricco750
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Originally Posted by lexuslvr2
How fast can a mechanic replace a front O2 sensor on a 12 RX350? My ride was in and out in 10 minutes. Price labor and part was $575. Did I just get hosed? Or did they just clear a code and not replace anything? I had the dealer do it so they would have a record.
You can get a Denso A/F or O2 sensor from RockAuto for between $85 and $115, so if you're willing to turn a wrench yourself, you could save almost $500 Hosed is putting it mildly. That's why they call it the Stealership.
Old 04-21-21, 12:31 PM
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RX in NC
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I replaced the factory Denso upstream bank one oxygen sensor in my wife's 2006 Jaguar XK8 in late December last year. Ordered the exact-fit Denso sensor from amazon.com for a total of $92 with free shipping. It was a 15-minute job in our driveway, done from above so no jack stands needed. The only tool required was my 22mm box wrench. The key was doing the job in bright sunlight so full visibility was available all the way through the engine bay.
Old 04-26-21, 04:08 AM
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lexuslvr2
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Originally Posted by ricco750
You can get a Denso A/F or O2 sensor from RockAuto for between $85 and $115, so if you're willing to turn a wrench yourself, you could save almost $500 Hosed is putting it mildly. That's why they call it the Stealership.
I do work on the simple things myself. Just don’t have any ramps to get to the lower ones. And I hear the rears are more work. Hosed...yea. More like boned.
thanks for all the feedback. Learn a lot on this forum.
Old 04-30-21, 09:14 AM
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Sdm9882x
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Before replace O2 Sensor Run the OBDII, Emission test show "Oxygen Sensor: "NOT PASSED". After replaced AIR FUEL Oxygen Sensor (Bank2, Sensor1) 89467-48060. Engine light ON with Error code P0430, OBDII: Catalytic converter system. Bank 2-". The Emission test shows " Catalyst NOT PASSED and "Oxygen Sensor: NOT PASSED".

Question is before replaced Oxygen Sensor (Bank2, Sensor1) , The Emission test shows " Catalyst PASSED and "Oxygen Sensor: NOT PASSED". Is this result Oxygen Sensor: have problem or Catalytic? Please advise.
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