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Stevoone · 06-12-2008, 08:35 AM

P1661 is for the MIL control CKT. It looks like the PCM monitors the circuit to make sure the Check Engine light is actually working when its supposed to. Does the Check engine light come on during the bulb test?

06-12-2008, 08:35 AM	#2
Stevoone Join Date: Mar 2007 Location: NJ Posts: 540 iTrader: (2)	P1661 is for the MIL control CKT. It looks like the PCM monitors the circuit to make sure the Check Engine light is actually working when its supposed to. Does the Check engine light come on during the bulb test?