Question about 1999 Jeep Grand Cherokee

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P1491 - 1999 Jeep Grand Cherokee

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Your radiator fan relay circuit - either fuse or sensor os bad

Posted on Mar 15, 2011

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Posted on Jan 02, 2017

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CHeck here test procedure about DTC P1491 - Malfunction in EGR System

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What does the diagnostic test code P1491 means?


Hello jhonney21,

The P1491 is Radiator fan control relay circuit code. It is set if an open or short circuit is detected in the radiator fan relay control circuit.

Regards,
netvan

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Have a code p1491 in my dodge neon 1995 what is it


Trouble code P1491 means: Radiator fan relay control circuit problem.

May 28, 2010 | 1995 Dodge Neon

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1998 Altima GXE has a code of P1491. It was


Code P1491 is not the PVC Valve.It is the Vacuum Cut Valve Bypass Valve.
Which is located above and away from the egr canister under the driver side rear bumper it is round and have about 3 hoses connected to it. if it is from a check engine light that says look at vacume cut valve check the egr canisters purge valve some times they stick and throw the wrong code

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Fault p1491


The code "P1491" on chrysler and jeep products, is the "radiator fan control relay circuit".

I hope this helps you, and I wish you luck on your repair.

Apr 27, 2009 | Dodge Ram 1500 Cars & Trucks

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