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Fault Code P115A-68 (2D) Low fuel level - forced limited pow
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RichardK
 


Member Since: 18 Jan 2006
Location: Western Australia
Posts: 295

Australia 2009 Discovery 3 TDV6 S Auto Atacama SandDiscovery 3
Fault Code P115A-68 (2D) Low fuel level - forced limited pow

Just managed to return from late shopping with D3 surging home the last 3 kms's.

Gap shows 2 faults:
P115A-68 (2D) Low fuel level - forced limited power - Algorithm based failure - event information
P115B-68 (2D) Low fuel level - forced engine shutdown - Algorithm based failure - event information
fuel guage shows around 150km's left
Can anyone enlighten me as to the problem please?

Cheers
RichardK
 2009 Discovery S 3, BAS tune, EGR Delete, ARB winch bar, Milemarker hyd winch, HF and UHF radios, Rear spare wheel carrier, Roof rack,
Touring: Australian Offroad Matrix IV Camper 
 
Post #231558419th Nov 2022 12:50 pm
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RichardK
 


Member Since: 18 Jan 2006
Location: Western Australia
Posts: 295

Australia 2009 Discovery 3 TDV6 S Auto Atacama SandDiscovery 3

Well all seems to be sorted, my initial interpretation of the IID seems to be correct, that when the fuel gauge shows empty it triggers a sensor to tell the ECU to force limited power or force shutdown.
In this case I had 130 km's allegedly still in hand so there must have been a hiccup somewhere.
I have now filled the tank, better off for the experience/knowledge.

Cheers
RichardK
 2009 Discovery S 3, BAS tune, EGR Delete, ARB winch bar, Milemarker hyd winch, HF and UHF radios, Rear spare wheel carrier, Roof rack,
Touring: Australian Offroad Matrix IV Camper 
 
Post #231565420th Nov 2022 9:41 am
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Flatlander
 


Member Since: 20 Jul 2015
Location: Here
Posts: 575

United Kingdom 

IIRC the forced shutdown happens if either fuel level sensor drops below the set threshold (presumably to prevent the fuel pump running dry on hills etc.) If you are still showing a decent range available then one of the sensors may have failed or come adrift. Can you read the actual output of the sensors? that may help whel the fuel level is getting low again to determine if & which sensor is the issue.
  
Post #231566220th Nov 2022 11:27 am
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RichardK
 


Member Since: 18 Jan 2006
Location: Western Australia
Posts: 295

Australia 2009 Discovery 3 TDV6 S Auto Atacama SandDiscovery 3

Hi Flatlander,
Thanks for the reply, when I checked the live values this afternoon after the problem was solved both sensors were between 2 to 3 volts. Now that you have alerted me that I will read it again tomorrow and note the results.

Cheers
RichardK
 2009 Discovery S 3, BAS tune, EGR Delete, ARB winch bar, Milemarker hyd winch, HF and UHF radios, Rear spare wheel carrier, Roof rack,
Touring: Australian Offroad Matrix IV Camper 
 
Post #231566920th Nov 2022 1:49 pm
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Volvo
 


Member Since: 29 Aug 2024
Location: Wigan
Posts: 1

United Kingdom 

Did you sort the problem in the end ? We are having a similar problem with a Volvo V50, driving me mad ha any help, much appreciated. Wink
  
Post #237617329th Aug 2024 8:33 pm
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