# P1491

**URL:** <https://community.cartalk.com/t/p1491/24241>\
**Category:** Maintenance/Repairs\
**Created:** [January 2, 2009, 8:18pm UTC](https://community.cartalk.com/t/p1491/24241 "2009-01-02T20:18:00Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![lucylou34](https://avatars.discourse-cdn.com/v4/letter/l/f08c70/32.png) [@lucylou34](https://community.cartalk.com/u/lucylou34)\
**Post date:** [January 2, 2009, 8:18pm UTC](https://community.cartalk.com/t/p1491/24241/1 "2009-01-02T20:18:00Z")

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I’ve got a 2002 Dodge Ram 1500, Quad Cab, 4.7 liter engine and I’ve got a P1491 error code popping up. Please advise what this is and how to repair it.

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**Author:** ![transman618](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/transman618/32/24_2.png) [@transman618](https://community.cartalk.com/u/transman618)\
**Post date:** [January 2, 2009, 9:14pm UTC](https://community.cartalk.com/t/p1491/24241/2 "2009-01-02T21:14:39Z")

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P1491 Rad Fan Control Relay Circuit

Is your radiator fan working?? Is the vehicle running hot or overheating??

transman

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**Author:** ![hellokit](https://avatars.discourse-cdn.com/v4/letter/h/6a8cbe/32.png) [@hellokit](https://community.cartalk.com/u/hellokit)\
**Post date:** [January 3, 2009, 6:28am UTC](https://community.cartalk.com/t/p1491/24241/3 "2009-01-03T06:28:58Z")

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This is the electrical circuit which turns the relay on, and off, which turns the radiator cooling fan on, and off. There is a problem with this electrical circuit. It may be a broken wire, a disconnected electrical, or a short. Someone with an electrical test meter, the wiring diagram, some knowledge, and some skill needs to check the circuit.