about 2 hours ago i followed the how 2 clean boost sensor. the pics of engine where different to mine as my egr valve assembly was directly behind the scre for the boost valve. i had to take the 3 bolts out of the egr valve bracket, and also the 2 bolts from the elbow joint of the egr to allow me access the boost sensor. the sensor was absolutely full of s**t. any way back to the point. put everything back and now when i turn my ignition on, the spanner light comes on, but then goes out when i start the car ??? is this ok ??