after getting cat back fitted and roll links for mot my mechanic checked alternator and said its in perfect working order and battery is clear too and never really gave me a valid answer as to why my engine wont idle right when heated.
after researching ive found cos my 4ws light is on one of the trouble shooting checks done by Honda is to see if engine is idling right. if that was the problem and its down to my 4ws light being on, what would be the direct cause of that?
its a worry for me as my mot is up on 25th this month and have since been told im going to fail with srs and 4ws on!!

I know easy way is to take bulbs out but I don't have means to do that or agree with it as its my safety and others in car at end of day. would it be costly to get mechanic to fix both problems considering its electrical?