Quote:
Originally Posted by blue62
If you disconnect the battery long enough the DME/ECU looses all memory and then resets to factory defaults when you reconnect a battery.
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And it also triggers an internal I/M Readiness protocol that pulls several emissions related sensors offline until the car has been drive a certain distance after reconnecting the battery. Because of this, the car will not pass emissions testing until the sensor registers reset to active or "ready". The EPA requires this protocol be in all internal combustion vehicles to prevent someone from disconnecting the battery just prior to going in for emissions........................
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