Code p0483, cooling fans will not turn on?

2006 SUBARU LEGACY
140,000 MILES • 2.5L • 4 CYL • 4WD • AUTOMATIC
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GRAHAM78
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The engine fans won't kick on, even with the A/C on, even if the green connector is plugged in. The car doesn't overheat, per the dash, but just pulled the p0483 code yesterday. has a new radiator and coolant, thermostat, checked out good then, no other known issues except for the A/C clutch not kicking on either. The A/C was working this summer.
Nov 15, 2023 at 5:10 PM
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AKASHBARMAN
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Nov 15, 2023 at 9:20 PM
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STRAILER
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The diagnostic trouble code (DTC) P0483 in a 2006 Subaru Legacy relates to the cooling fan. This code indicates "Fan Rationality Check Malfunction,"

If neither fans are working it sounds like the main fan relay 1 is not working but we should check the fuses (3, under the hood and #26 and #22 inside fuse panel) as well, here is a guide to help you check the fuses and if they are okay, I would swap out the relay.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

and

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Check out the images (below). Please let us know what happens.
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Nov 16, 2023 at 10:47 AM
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GRAHAM78
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Sorry for the late response, finally got the relay swapped out with no change. Now it's 20' out, so, it is getting harder to diagnose. Still no fan with the A/C on though..
Nov 24, 2023 at 2:35 PM
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STRAILER
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How are the fuses? do they have power?
Nov 25, 2023 at 9:27 AM
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GRAHAM78
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Yes, I'll need to double check though at this point. Now with the weather change, the temperature isn't coming up over 1/4 to 1/3. He used to consistently run at half.
Nov 25, 2023 at 1:52 PM
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STRAILER
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Also, I would try swapping out the main fan relay one if the fuses are okay.
Nov 26, 2023 at 11:24 AM
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GRAHAM78
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That relay has been changed now. I had to wait for a new one before I even messed with it. Subaru has it shrouded right in the fuse box they like to fall apart when removed.
Nov 26, 2023 at 3:23 PM
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STRAILER
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So, does the fan come on when the A/C is on? If not, I would test the yel/grn wire to the fan motor for power with the A/C on. Here is a guide to help:

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Please go over this guide and get back to us.
Nov 27, 2023 at 9:02 AM