SC 300 Failed Emmisions Test, Replaced 02 Sensor...Still Not Passing
05-21-13, 08:01 AM
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SC 300 Failed Emmisions Test, Replaced 02 Sensor...Still Not Passing
Hi, Club Lexus....It REV500.
I need advice and help...02 Sensor problem. First went to emission's and failed, check engine light was on and had to replace 02 Sensor. I did right away.
Went back to emission's and was told the car is "NOT" ready, (No Codes ?) that I have to drive it 30-60 miles.
So, I did as instructed, went back to emission's and same thing car "Not Ready, No Codes ???".
Please can someone advise me on what to do.
My current mechanic (who, I do not trust) wants to give the car a tune up ? Please advise me.
Thanks Clubs Lexus
I need advice and help...02 Sensor problem. First went to emission's and failed, check engine light was on and had to replace 02 Sensor. I did right away.
Went back to emission's and was told the car is "NOT" ready, (No Codes ?) that I have to drive it 30-60 miles.
So, I did as instructed, went back to emission's and same thing car "Not Ready, No Codes ???".
Please can someone advise me on what to do.
My current mechanic (who, I do not trust) wants to give the car a tune up ? Please advise me.
Thanks Clubs Lexus
05-21-13, 06:44 PM
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Did you get a sheet from your emissions place telling what your emissions level were? If you only failed due to the CEL and you've driven around enough, it sounds like somebody is messing with you...
05-21-13, 07:25 PM
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Sounds like your Monitors are Incomplete/Not Ready. This happens when you CLEAR the ECU of all trouble codes either by disconnecting the battery for a certain time or Clearing the codes with a Scantool. This is a Functional part of the Emissions test in California, it only applies to OBD2 systems, most 96+ vehicles.
Most of the time if the repairs are done correctly, you would need to drive the vehicle 30-60 miles depending on manufacturer specs to set those monitors Complete to pass the functional OBDII test.
Most of the time if the repairs are done correctly, you would need to drive the vehicle 30-60 miles depending on manufacturer specs to set those monitors Complete to pass the functional OBDII test.
05-21-13, 08:12 PM
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Sounds like your Monitors are Incomplete/Not Ready. This happens when you CLEAR the ECU of all trouble codes either by disconnecting the battery for a certain time or Clearing the codes with a Scantool. This is a Functional part of the Emissions test in California, it only applies to OBD2 systems, most 96+ vehicles.
Most of the time if the repairs are done correctly, you would need to drive the vehicle 30-60 miles depending on manufacturer specs to set those monitors Complete to pass the functional OBDII test.
Most of the time if the repairs are done correctly, you would need to drive the vehicle 30-60 miles depending on manufacturer specs to set those monitors Complete to pass the functional OBDII test.
It needs to cycle each individual system. Usually EVAP and Cats are last to cycle. Some cars have a very extensive checklist before all systems read "Ready" including gas cap removal, 30mph cruise, cold start, etc. Also, you don't technically need ALL sensors systems to come back as "Ready." New York, for example, allows TWO systems to not read ready and still pass OBD2 just as long as the senors system doesn't read "Failed."
I've gone through hell researching this stuff on my track toy 350Z with longtubes that wouldn't pass until last year without divine intervention.
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