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DISCO3.CO.UK > Maintenance & Mods (D3)

P0490 Which Egr valve?
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ds23man
 


Member Since: 19 Jan 2013
Location: Ainum
Posts: 227

Netherlands 2007 Discovery 3 TDV6 HSE Auto Java BlackDiscovery 3
P0490 Which Egr valve?

I am getting a P0490 fault code, but to which egr valve is it related?  
Post #110170210th May 2013 4:53 pm
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tomtom86
 


Member Since: 09 Mar 2013
Location: Here and there
Posts: 590

Can't say from just the fault code you need to check them in live readings using suitable diagnostic kit Thumbs Up  
Post #110173710th May 2013 6:28 pm
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ds23man
 


Member Since: 19 Jan 2013
Location: Ainum
Posts: 227

Netherlands 2007 Discovery 3 TDV6 HSE Auto Java BlackDiscovery 3

I have a Faultmate MSV2, nothing shows in the live readings for the EGR valves ( N/A).

When I disconnect the lefthand EGR the faultcode changes to P0489.  
Post #110176910th May 2013 7:33 pm
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tomtom86
 


Member Since: 09 Mar 2013
Location: Here and there
Posts: 590

Usually p0490 indicates sensor Thumbs Up a is faulty which is the rh valve but I always check them via live readings to confirm  
Post #110177910th May 2013 7:43 pm
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ds23man
 


Member Since: 19 Jan 2013
Location: Ainum
Posts: 227

Netherlands 2007 Discovery 3 TDV6 HSE Auto Java BlackDiscovery 3

Ok, but all the EGR related bits are dead in my live readings........  
Post #110178610th May 2013 7:53 pm
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ds23man
 


Member Since: 19 Jan 2013
Location: Ainum
Posts: 227

Netherlands 2007 Discovery 3 TDV6 HSE Auto Java BlackDiscovery 3

Stupid diagnostic's, just tested the EGR valves with a test cable and a lab power supply. The R/H side one is plain stuck. No code for that, just a general one........  
Post #110192511th May 2013 6:48 am
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ds23man
 


Member Since: 19 Jan 2013
Location: Ainum
Posts: 227

Netherlands 2007 Discovery 3 TDV6 HSE Auto Java BlackDiscovery 3

Changed the R/H EGR valve and everything is ok now. The old has a stuck actuator and the ball bearings were gone....  
Post #110240712th May 2013 9:00 am
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