1998 Cadillac DeVille with engine code P1660, how do I fix this problem?

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Carguy1 · Answer 1 · 2018-06-11T18:45:24+0000

Hi there,

This code indicates an issue with the cooling fan relay. Here is a list of possible causes.

P1660 CADILLAC - Cooling Fan Control Circuit
Read more: https://www.autocodes.com/p1660_cadillac.html