Hi all I have the above car in,failed NCT on emissions. Breather pipe and valve under air box cracked so replaced.Although car is running fine its still hi on CO over 4%. Also Code P2058 Lambda control comes up after about 20 miles and today P201C mixture adaptation appeared. The front 02 sensor is switching between 0.1 and just over 4 volts.The rear 02 sensor is switching between 0.1 and 0.75 volts and occasionally flat-lines to zero when throttle is released. I've checked all the usual suspects(oil contamination in the 02 loom)and also for any other air leaks.The engine light has been on for over a year on the car because of the split pipe and I'm wondering if it just needs a good drive to reset the system(it only travels 2 miles a day to work apparently)Also the long term fuel trim since the repair has come down from 18% to 11.5% If anyone can throw any light on this I'd much appreciate it.

Many thanks
Dominic.