Newby

[Andy314]

New to the Roadmaster world. I have owned a Buick Regal in the past, but always have loved the Roadmaster. Recently bought a 1996 Roadmaster sedan LT1 Collector's Edition. I have a DTC code P1641 come up. Any ideas on the best place to start??

 

[HotZ28]

Welcome to the forums! P1641 would indicate a problem in the #1 coolant fan control circuit. Does one fan come on when you turn on the AC?

 

[Andy314]

I have no idea. I got so many mixed signals when I tried to research. I haven't even begun to try to trouble shoot.