Moving the second O2 sensor, will it cure the P0420 code?
02-08-2017, 01:36 PM
#1
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Join Date: 10-13-2011
Location: Welland,Ont Canada
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Moving the second O2 sensor, will it cure the P0420 code?
Well, today we set out for a cruise in the country to pick up eggs, drive for 45 minutes at about 45 mph, come up to a stop sign, the way is clear, leave and proceed and the CEL lights up!
Pulled over and connected my OBD II reader, and it's the P0420 code back again, so I believe the oil and condensation that was getting into the throttle body via the hose to the valve cover is most likely not the cause of the code, it might have been from last year or so, but who knows.
Plan B install the O2 sensor spacer to move the second or after catalytic converter sensor back out of the exhaust flow in the pipe, this should stabilize the readings to the ECM and stop the P0420, this is s test, I am not saying this is the cure, just a test. I'm going to try the spacer setup until April 1, 2017, and see if that stops the code from returning!
Wow edge of your seat tension , much more exciting then that ball game last Sunday !! Well maybe for some.
Pulled over and connected my OBD II reader, and it's the P0420 code back again, so I believe the oil and condensation that was getting into the throttle body via the hose to the valve cover is most likely not the cause of the code, it might have been from last year or so, but who knows.
Plan B install the O2 sensor spacer to move the second or after catalytic converter sensor back out of the exhaust flow in the pipe, this should stabilize the readings to the ECM and stop the P0420, this is s test, I am not saying this is the cure, just a test. I'm going to try the spacer setup until April 1, 2017, and see if that stops the code from returning!
Wow edge of your seat tension , much more exciting then that ball game last Sunday !! Well maybe for some.
02-08-2017, 05:30 PM
#2
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Join Date: 01-23-2009
Location: Fredericksburg, Virginia
Posts: 24,670
That is the circumstance that P0420 test runs. As it comes to idle the computer diddles with the A/F then measures the lag at the #2 sensor. It is in milli seconds.
It is a test of oxygen storage in the catalyst.
It is a test of oxygen storage in the catalyst.
02-11-2017, 01:21 PM
#4
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Join Date: 10-13-2011
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I installed the spacer , just one, I drilled out the centre hole to 1/2 inch, installed a crush washer, no codes since I cleared them on Tuesday the 8th, let's see what happens.
Now this spacer moved the O2 sensor out of the exhaust flow , the O2 sensor was very clean looking no corrosion, no caked on soot, or crud, fingers crossed
I'm sorry I didn't take pictures, the driveway was wet from the 40 degrees weather melting yesterday's snow storm!
Now this spacer moved the O2 sensor out of the exhaust flow , the O2 sensor was very clean looking no corrosion, no caked on soot, or crud, fingers crossed
I'm sorry I didn't take pictures, the driveway was wet from the 40 degrees weather melting yesterday's snow storm!
02-14-2017, 07:05 PM
#7
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Join Date: 10-13-2011
Location: Welland,Ont Canada
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I'm just testing the theory of the spacer concept, I saw on YouTube a thimble like device called a Tom Thumb, I'm not sure about that , however if I'm still getting the code by April 15th, I'm throwing a new catalytic converter on and calling it a day with this experiment.
