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Old 26-07-19, 03:24 PM   #1
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Join Date: May 2018
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Default P0485 - Cooling Fan Power/Ground Circuit Malfunction

Hi Everyone,

I have an 807, 57 plate, 2.0 litre petrol. The diagnostics show the error above :
P0485 - Cooling Fan Power/Ground Circuit Malfunction

I have checked the relays (two of them) and replaced them with ones from Peugeot. When running the fan checks, high speed fan works fine, but low speed doesn't.

I have had a look at the wiring around the relays, but cannot find where the fault could be.

Does anyone have any idea ? Or do you know of an auto electrician in the northwest area who could have a look.

Any help appreciated

Thanks
Jeff
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Old 26-07-19, 10:57 PM   #2
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Just as a side note, when the engine heats up and goes over 90, it gets to 100 then the main fan kicks in, but the strange thing is that when the car slows down when its hot and i stop dead; when I start again the auto gear box really kicks into gear, as if someone has bumped from behind.

If i go manual and go through the gears manually it doesn't do this.

I'm pretty sure its to do with the slower fan not kicking in, so the engine is just getting too hot which in turn makes the gearbox run hotter.

Please any help ??
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