oxygen sensor

burton51m · 03-20-2007, 01:33 AM

my engine light came on when i was driving down the highway yesterday. I did a diagnostic check when i came back and got a code 21 (oxygen sensor signal).

It could be the oxygen sensor itself or the wiring, ( Checked all the connections..no loose wires or dry rotting here)I dont know yet.

any way of telling?
any way of cleaning the sensor? Because a new one if really expensive.

mrnickleye · 03-20-2007, 01:38 AM

No cleaning, only replacing.

They aren't too much $$$.

If wiring seems good, then likely sensor.

Ohm meter testing, or best is 'on the car' with proper scanner.

burton51m · 03-20-2007, 09:47 PM

i thought the guy said they were $146.** at the dealership when i called?

at least i think he said $146

redmaro · 03-20-2007, 10:56 PM

I you dont want to spend that much look into Bosch O2 sensors, they are cheaper . You can buy them at Auto Zone or Checkers.

Staceman · 03-21-2007, 02:28 PM

Don't go with Bosch. You can get NipponDenso o2 sensors at sparkplugs.com far cheaper than the dealer. This is OEM. Also, the "snout" is longer than the Bosch, which gets a better read of the exhaust as it passes through. Check it out.

OmeGa · 03-22-2007, 02:50 AM

I bought one and found out later I didnt need it. $50+ shipping and its yours.

burton51m · 03-23-2007, 03:11 AM

i already got one at autozone for 40 thanks anyway

ethan12510 · 03-25-2007, 08:16 PM

my 89 supra also needs a new o2 sensor. but where exactly is the o2 sensor loacted? Thanks.

redmaro · 03-25-2007, 08:21 PM

Its located right on the Turby elbow.

ethan12510 · 03-25-2007, 08:24 PM

im sorry but im a bit of a noob. And Dont know what a Turby elbow is. sorry
And thanks in advance for the help!!

03-20-2007, 01:33 AM	#1
burton51m Lexus & 550's Join Date: Feb 2006 Location: Canton, OH Posts: 536	oxygen sensor my engine light came on when i was driving down the highway yesterday. I did a diagnostic check when i came back and got a code 21 (oxygen sensor signal). It could be the oxygen sensor itself or the wiring, ( Checked all the connections..no loose wires or dry rotting here)I dont know yet. any way of telling? any way of cleaning the sensor? Because a new one if really expensive. __________________

03-20-2007, 01:38 AM	#2
mrnickleye 1000whp postwhore Join Date: Jun 2005 Location: Mojave Desert, Calif. Posts: 1,705	No cleaning, only replacing. They aren't too much $$$. If wiring seems good, then likely sensor. Ohm meter testing, or best is 'on the car' with proper scanner. __________________ Had a Red 1989 N/A. Automatic. Sports Pkg. w/wing. TEMS, and some nice MODS. Sold to a friend 10/08/08.

03-20-2007, 09:47 PM	#3
burton51m Lexus & 550's Join Date: Feb 2006 Location: Canton, OH Posts: 536	i thought the guy said they were $146.** at the dealership when i called? at least i think he said $146 __________________

03-20-2007, 10:56 PM	#4
redmaro walbro fp Join Date: Mar 2006 Location: arizona Posts: 432	I you dont want to spend that much look into Bosch O2 sensors, they are cheaper . You can buy them at Auto Zone or Checkers. __________________ MK3, Auto, Turbo.

03-22-2007, 02:50 AM	#6
OmeGa 3" Exhaust Join Date: Jul 2006 Location: Columbus Posts: 86	I bought one and found out later I didnt need it. $50+ shipping and its yours. __________________

03-21-2007, 02:28 PM	#5
Staceman Intake Join Date: Nov 2006 Location: Phoenix, Az. Posts: 48	Don't go with Bosch. You can get NipponDenso o2 sensors at sparkplugs.com far cheaper than the dealer. This is OEM. Also, the "snout" is longer than the Bosch, which gets a better read of the exhaust as it passes through. Check it out.

03-23-2007, 03:11 AM	#7
burton51m Lexus & 550's Join Date: Feb 2006 Location: Canton, OH Posts: 536	i already got one at autozone for 40 thanks anyway __________________

03-25-2007, 08:16 PM	#8
ethan12510 3" Exhaust Join Date: Feb 2007 Location: Queensbury Ny Posts: 117	Where? my 89 supra also needs a new o2 sensor. but where exactly is the o2 sensor loacted? Thanks.

03-25-2007, 08:21 PM	#9
redmaro walbro fp Join Date: Mar 2006 Location: arizona Posts: 432	Its located right on the Turby elbow. __________________ MK3, Auto, Turbo.

03-25-2007, 08:24 PM	#10
ethan12510 3" Exhaust Join Date: Feb 2007 Location: Queensbury Ny Posts: 117	im sorry but im a bit of a noob. And Dont know what a Turby elbow is. sorry And thanks in advance for the help!!

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