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For the computer to relearn, there must be continous power supply even when engine is turned off. Any interruption to the memory power supply would cause the ECM to reset and that is one of the possible reason why some of the sensors are not ready yet.
If the battery terminals are loose and cannot be tightened, you could either replace the terminals or add a wedge to get them secured.
If after securing the terminals and the MIL still appears, then you would need to go into diagnostics to see what is causing the problem and if the codes are for the O2 sensor.
Monday, August 17th, 2009 AT 8:08 PM