Give the clutch and brake pedal switches a once over, both get regular use so I'd imagine they are likely to need some attention. Electrical function and working position should be checked. Usually they're pretty simple switches, sometimes they get dirty or are moved somehow (making the car think youve pressed the brake/clutch pedal).
Otherwise it could be a host of things. Abs sensor (for roadspeed signal) or engine speed sensor (crank sensor), I think it uses these to work out which gear you're using, doesn't it only work in 4th, 5th and 6th?
Hth.
Otherwise it could be a host of things. Abs sensor (for roadspeed signal) or engine speed sensor (crank sensor), I think it uses these to work out which gear you're using, doesn't it only work in 4th, 5th and 6th?
Hth.
