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.
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.
There are in fact 2 of those resistor relays on my car, but the other one is ok.
The bad one was burnt out around the resistor.
I changed the 2 green relays at the same time as a double-check. Cheap so not a prob.
So low and high speed fan speed now both work as checked using PP2000 test...
I have the same issue so will check/replace the relays and resistor but can anyone elaborate what PP2000 test is? (I assume test for low and high speed cooling fan?) but what is needed to run it?
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