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FBH - passes operational self-test yet fails to operate
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Mike_A4
 


Member Since: 25 May 2018
Location: Suffolk
Posts: 75

United Kingdom 2005 Discovery 3 TDV6 SE Auto Java BlackDiscovery 3
FBH - passes operational self-test yet fails to operate

Now here's a thing...

Using my IDTool, I can ask the FBH in my 2005 D3 to self-test. And it does - white exhaust smoke, heat, fan noise, everything. Wonderful.

But it never actually works. Whenever I check the fault log I see the attached image.



"B1D29-93 (2E) No start, even after restart attempt - Component failure - no operation"

I appear to have the Schrödinger's Cat version which can be both operational and yet non-operational at the same time. I have tried the fuse-out reset, but it made no difference. Any suggestions? Pro job? And, if so, Anglian suggestions?

Thanks in advance. As you were, carry on.
  
Post #210162824th Nov 2019 12:57 pm
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Dangerous
 


Member Since: 06 Aug 2017
Location: Suffolk
Posts: 108

United Kingdom 2006 Discovery 3 TDV6 HSE Auto Tonga GreenDiscovery 3

Did you get this sorted buddy?
  
Post #210276930th Nov 2019 5:15 pm
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Mike_A4
 


Member Since: 25 May 2018
Location: Suffolk
Posts: 75

United Kingdom 2005 Discovery 3 TDV6 SE Auto Java BlackDiscovery 3

No, it's still failing in operation.
  
Post #210277430th Nov 2019 5:26 pm
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Dangerous
 


Member Since: 06 Aug 2017
Location: Suffolk
Posts: 108

United Kingdom 2006 Discovery 3 TDV6 HSE Auto Tonga GreenDiscovery 3

Oh bother!
Well I have the same issue currently.
  
Post #210277530th Nov 2019 5:31 pm
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aja4x4
 


Member Since: 14 Apr 2019
Location: Westbury
Posts: 2459

United Kingdom 2005 Discovery 3 TDV6 SE Auto Zambezi SilverDiscovery 3

Check your fuel pump. I have had something simular on an eberspacher night heater where the unit tested ok but failed to start it turnd out to be a blocked filter in the pump. Enough fuel was getting through to make it smoke but not enough to establish a good flame.
  
Post #210278030th Nov 2019 5:43 pm
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Mike_A4
 


Member Since: 25 May 2018
Location: Suffolk
Posts: 75

United Kingdom 2005 Discovery 3 TDV6 SE Auto Java BlackDiscovery 3

It’s more weird than I thought.

Now we’ve had a few cold mornings, I know that the Webasto is working perfectly. But the diagnostic system permanently reports back the E7 operation failure error. So it’s still the Schrödinger's Cat scenario, but the other way around – it is working but the computer says No.

I might just ignore this issue now...
  
Post #211509723rd Jan 2020 12:29 pm
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Harry365
 


Member Since: 25 Aug 2018
Location: Lincoln
Posts: 373

United Kingdom 2007 Discovery 3 TDV6 XS Auto Zermatt SilverDiscovery 3

E7 is in test mode is usually because

a) the engine isn't running or
b) the fan/AC/climate control is on

Engine running and CC off for check operation.
  
Post #21918996th Dec 2020 4:28 pm
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