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No, only if an issue clears because is not a "hard" issue. Also, you need to know what the issue is in order to determine how many cycles are needed. Of course if it is not a "hard" issue but comes and goes you could go on forever trying to wait for the CEL to clear.
If you disconnect the battery for any reason then there are a number of drive cycles before it will be ready for emissions testing. Forgotten how many cycles.
No, only if an issue clears because is not a "hard" issue. Also, you need to know what the issue is in order to determine how many cycles are needed. Of course if it is not a "hard" issue but comes and goes you could go on forever trying to wait for the CEL to clear.
If you disconnect the battery for any reason then there are a number of drive cycles before it will be ready for emissions testing. Forgotten how many cycles.
Mr. Sam
OK--lets say you get a code with the cel on--you clear it--drive for 50-100 miles--in several days--the code and light DO NOT comeback--how does that compare to disconnecting the battery as far as emissions passing?
IF,,,, You have a CEL and after a few drive cycles it goes out,, the DTC and the (thing that was causing problem) are no longer an issue.
Most likely, your drive cycles have cleared the EMISSIONS NOT flags.
The ONLY way to positively know is to use a hand held scanner and monitor the emissions ready register (flags) or take it to the emission stations and cross your fingers.
AUTOZONE has a free check for DTCs and emissions ready status. You just have to go get er done!
Basically, you can't slip through emissions testing by pulling the battery cable or using a scanner to clear the codes. Once you do that you need to go through the drive cycle to make sure the codes don't come back.
