Kool thanks for that, i feel mega releved now thought it was a massive issue 
Common thing to go wrong, I removed one of a 60k passat recently as it had gone and bypassed it as it kept throwing a light up. As its got no real use anyway, just was fitted with it for the emission regulations. But MOT time it won't effect emissions test as it only such a small purpose it serves, which is just this one task during startup.