p1491 Service Code

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May 19, 2007 | 09:07 PM

zylozx

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Joined: May 2007

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p1491 Service Code

I have already replaced the Relays and still my fan does not work properly..when i have this code....what should i check next....

May 19, 2007 | 09:46 PM

ATsGCSRT8

Joined: May 2007

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RE: p1491 Service Code

Check all your wiringfrom the fan to the PCM. Look at all the connectors and make sure everything is plugged in and the connectors aren't broken.

May 20, 2007 | 03:38 PM

master tech

Site Moderator & Tech

Joined: Apr 2007

Posts: 11,642

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From: Near Sacramento,ca

RE: p1491 Service Code

Ck the big fuses in the PDC, it maybe a 30 or 40 amp fuse. I had a ck engine on for the fan circuit, Thats when I found a blowen fuse. Cleared the codes. No more ck engine lite.

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