Showing posts with label Fan Resistor OBD code P0485. Show all posts
Showing posts with label Fan Resistor OBD code P0485. Show all posts

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.