Astra engine management question.

maybe pulled a wire off the engine. have a look. if no joy get the code read

May be like a recent post on ABS system if car was still moving when you turned it off.

Someone else will know for sure but I think you can clear Vauxhalls by disconnecting the battery for half an hour although you will have to drive it gently at first until the ECU learns its settings again.

Depending on age you may be able to do the paper clip trick to read the codes.

Paul

disconnecting the battery for half an hour although you will have to drive

Why on earth do you need to drive it gently????

I found another post saying turn the ignition on and off 25 times to clear the error light. I was a bit sceptical but tried it anyway.. It worked!!!!! Have done about 50 miles since the incedent and the car isn't doing anything unusual and seems to be performing as normal.

If the fault is not continuing then it will clear after a certain number of start ups without incident, I thought it had to be started and run, but obviously not. A common cause of intermittent fault lights on astra and corsa particularly is the use of supermarket petrol, which is sometimes of such a low quality that the knock sensor detects it. driving gently to use up the cheap fuel and a change to good stuff can do the trick.

Mrcheerful

I'm kind of hoping that it just got a bit confused because in my panic to stop the car bouncing round the carpark I just switched the ignition off (like I said before it seemed like a good plan at the time). I can't imagine I did any more damage than a stall or a learner kangarooing would do! It didn't seem to switch itself to emergency limp to the garage mode.