Friday, April 27, 2012

Fan Resistor OBD code P0485


You know the TV series Ghost Whisperer? We’ll for the pass 2 days I’ve been experiencing Car Whisperer...lol.

While driving, the temp meter would suddenly max out with the stop light flashing then return back to normal. This would happen a few times a day while driving or when starting the car. Upon checking, the radiator fan only turns on high speed. It wont run on low speed. Testing the fan using PP2000 confirmed this.



A scan with PP2000, showed error  Code P0485. Possible causes of this :-
1. Fan relay
2. Fan Resistor
3. Wiring harness to the fan, relay or resistor is out of order.

This error code generally happens when the BSI detects the fan is not functions as it should.

So I began check the relays first. There are 2 relays, one for high speed and one for low speed. The relays are located beside the fan, happily hiding behind the panel.

To access the relays, you'll have to remove the grill first.

 Tested both relays and both were working fine.
The 2 relays. One for the high speed circuit and the other low speed.

 
Next to test was the fan resistor. Took it out , tested it with a multimeter and confirmed this was spoil. 











The resistor's location. Replace it and the fan works fine. Bought the fan resistor for RM70.


8 comments:

  1. May I know where you done this repair? Total cost you how much to fix his?

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  2. I did this at time bomb auto. You can get the location here http://www.peugeotclubmalaysia.com/WShp_address.htm

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  3. Aiyo! I just kena RM180 to replace an original resistor!

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  4. In fact, it's just a £5.00 barang....sad..

    http://www.petercoopercarrepairs.co.uk/peugeot_206_engine_cooling_fan_w.htm

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    Replies
    1. But with postage here, it will cost about the same I guess.

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  5. How did you confirm by a multimeter that the resistor is spoiled? My Bestari has the same problem as yours. I took the resistor out as you have done and outwardly it appears fine without any burnt marks, broken wire, corrosion, etc. test by a multimeter reveals the following:
    - there is no continuity between terminal 1 and 3 in the connector block. These are the terminals where the resistor is connected, right?
    - however, when I position my multimeter probes at the ends of the resistor itself, it shows that there is continuity with a low resistance of about 2 ohms.
    I do not understand what terminal 2 and the capacitor/diode(?) connected to it are for.
    Is my resistor kaput?
    Thanks.

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  6. Hi..the confirmation was done by the mechanic. So I can't say what the reading on the multimeter should be. If you tested the 2 green relays located there and both are working fine, then most probably your resistor kaput already.

    ReplyDelete