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St220 Denso Sat Nav Unit A204 Error

st denso sat nav error a204 $

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#1 mrrossdude



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  • Name: Tom
  • Ford Model: Mondeo ST220 [6]
  • Year: 2003
  • Location: Shropshire

Posted 28 May 2013 - 08:38 PM

Hi there,


Just got a 53 plate Mondeo ST220 with the Denso touchscreen sat nav/radio/cd unit. 

The sat nav is showing a symbol with a globe with a cross through it, displaying apparently that it cannot get GPS signal. 


I have also entered the error screen and noticed it has an $A204 error, which I believe is an error with the aerial/gps mast. 


Looking further into the diagnostic screen though, it seems to show that I can actually "see" quite a few satellites.


I'm confused as to why it would be the aerial aswell, given the fact that the radio works perfectly. 



Anybody got any idea? Was going to buy a new mast and antenna off of ebay, but the ones that actually support GPS are expensive by my standards. 



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#2 Stoney871


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  • Name: Clive
  • Ford Model: 2015 Focus ST3 250BHP
  • Year: 2015
  • Location: Devon

Posted 30 May 2013 - 02:51 AM

That code is for an antenna fault, sometimes a very small amount of corrosion can cause a confused signal or even no signal at all.

I reckon you need to replace your antenna mount.



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