hi all i have a shogun sport 2005 116000 miles the issue i have is related to engine management light, when ignition turned on normally the light goes out but every so often it stays on whilst engine running and driving, their is no problem with power it will pull ok poss slight loss of economy the light does not come whilst driving have done code read code 41 was discovered have replaced both solenoid valves on inlet manifold if i do a code erase it will take approx 3 starts before issue arises again any advice or suggestions would be appreciated! o! sorry forgot to mention its a 2.5 diesel thanks atts