Question about 1999 Dodge Grand Caravan

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I took my 99 dodge grand caravan to advanced auto and got a computer readout of p1491 as the error code. is this important and is this expensive?

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  • Dodge Master
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P1491 is Radiator Fan Control Relay Circuit. MEANING: An open or shorted condition detected in the low speed radiator fan control circuit.
Some questions for you:
1. Is your Caravan overheating?
2. Is your Caravan water temperature spiking going past the midway point on the Temp Gauge before the radiator is engaged?
3. Is your Rad Fan coming-on and then turning off and back-on in a very short period of time (like under a minute?
If all of these are "No" then do not worry about it.


Posted on Nov 16, 2009

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Posted on Jan 02, 2017

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