O2 sensor Bank 2 Sensor 2 out. Need Help with Denso part number.

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Mar 24, 2014 | 03:08 PM
  #1  
I've never had so many problems with a car. I have RWD 2006 GS300, so far I have rebuilt the transmission, new motor, new ECU, new water pump, new suspension, and other minor stuff here and there, this car was worse than my Mustang. Now I'm in the need of a new O2 sensor and my friend stated that Bank 2 Sensor 2 was out after I replaced the ECU. I could not find a definite answer on the forums or any other forums. I assuming that it would be Denso part # 234-4806. But I don't want to assume. Can anyone help?

And no I'm not taking it to the dealer, they are the ones responsible for my blown motor and would not take responsibility for it (went in for a recall, came out with a busted water pump and a blown motor). I would rather have my friend/mechanic do it.
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Mar 24, 2014 | 03:15 PM
  #2  
If you replaced the ECU there are two parts for 06, the newer ECU revision requires a new revision of the rear O2 sensors. Chances are the sensors are fine, but both banks are the wrong part now.

Also what code is it?
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Mar 24, 2014 | 03:31 PM
  #3  
The replaced ECU was a pull of from a another wrecked GS which I had to reprogram with a tech. They cleared the codes twice but check engine check vsc light came on after I drove a couple of miles. Part Number on the ECU is 89666-30350
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Mar 24, 2014 | 06:18 PM
  #4  
Quote: If you replaced the ECU there are two parts for 06, the newer ECU revision requires a new revision of the rear O2 sensors. Chances are the sensors are fine, but both banks are the wrong part now.

Also what code is it?
The error code Im getting is P0057
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Mar 24, 2014 | 07:38 PM
  #5  
P0057 is the heater circuit, that specific code I think usually does just mean bad sensor. I don't know what the denso number is I suggest you just get an eBay replacement as the rear sensors are not important.

Bank 2 is the driver side I believe, that one is the more difficult of the two to replace because I think the bung that goes through the floor is pretty much under the driver seat. The harness is on the side of the center console.
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Mar 25, 2014 | 08:59 AM
  #6  
Quote: P0057 is the heater circuit, that specific code I think usually does just mean bad sensor. I don't know what the denso number is I suggest you just get an eBay replacement as the rear sensors are not important.

Bank 2 is the driver side I believe, that one is the more difficult of the two to replace because I think the bung that goes through the floor is pretty much under the driver seat. The harness is on the side of the center console.
So I narrowed it down to 2 sensors both seem the same but one has longer wires, which one would probably fit? the short wire or long?
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Mar 25, 2014 | 11:42 AM
  #7  
Quote: So I narrowed it down to 2 sensors both seem the same but one has longer wires, which one would probably fit? the short wire or long?
The longer wire is the driver side one I am pretty sure. Look under your car you can see the sensors and the wiring up to the bung plug clearly on either side.
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Mar 25, 2014 | 02:55 PM
  #8  
Quote: The longer wire is the driver side one I am pretty sure. Look under your car you can see the sensors and the wiring up to the bung plug clearly on either side.
I contacted Denso and they stated I would need that part I listed up at top (234-4806). Thanks for the help though Jay. Should've contacted them a long time ago. LOL
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