Drive cycle will be complete and system ready only when the PCM run all test
it may take up to 300 miles or more a week or two of regular driving
if it still saying that the o2 sensor not ready then the PCM have not determined if that sensors is OK or not
and they still under test
resetting the computer or disconnecting the battery will only put you back at the starting point
make sure the engine is reaching operating temperature and thermostat + coolant sensor OK
start cold engine let it idle for about few min
then take it for a long ride 80 100 mile
try to hold steady speed for a few miles and over 45MPH
then at the end of the trip test if system ready and DO NOT turn it off
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Saturday, April 26th, 2008 AT 9:58 PM