10-29-2007, 09:53 PM
Join Date: Oct 2007
Posts: 3
Diagnostic Code P1491
Anyone have ideas code cam on two days ago feels a little sluggish, 2002 dodge 1500, 4.7 L, loaded.
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10-29-2007, 10:24 PM
RE: Diagnostic Code P1491
"Radiator Fan Ctrl Relay Circ" Maybe the computer thinks the fan's misbehaving, so it backs off the power?
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10-29-2007, 10:39 PM
Registered User
Join Date: Mar 2004
Vehicle: 1993 Ford Mustang LX 5.3
Location: Bremen, GA.
Posts: 2,679
RE: Diagnostic Code P1491
This may sound strange, but I have seen this code many times. Check all fusesin the power distribution center under the hood. I bet you find a blown fuse...
10-29-2007, 10:43 PM
Registered User
Join Date: Mar 2004
Vehicle: 1993 Ford Mustang LX 5.3
Location: Bremen, GA.
Posts: 2,679
RE: Diagnostic Code P1491
I think that it is fuse # 39.
03-31-2009, 08:06 PM
Professional
Join Date: Dec 2007
Vehicle: 2002 Ram 1500 Quad cab long bed
Location: Ellsworth AFB, SD
Posts: 176
Bump -
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2002 Ram 1500 QCLB, 4x4, 4.7L, KC daylighters, Flowmaster 40 series, 2" level kit, Nitro Gas Shock's, 265/70/R17 cooper discoverer AT, black truck club member #43
03-31-2009, 09:23 PM
Professional
Join Date: Dec 2007
Vehicle: 2002 Ram 1500 Quad cab long bed
Location: Ellsworth AFB, SD
Posts: 176
update: Fuse was blown, replaced still didn't fix. manual says relay could also be bad. ordered up a relay should be in by thursday
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2002 Ram 1500 QCLB, 4x4, 4.7L, KC daylighters, Flowmaster 40 series, 2" level kit, Nitro Gas Shock's, 265/70/R17 cooper discoverer AT, black truck club member #43
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Diagnostic Code P1491
