2015 Vauxhall Corsa reduced engine power

It all depends on what you call servicing and what it entailed . Some people think changing the oil / filter is a service . If it goes into limp mode there should be a stored code , scan it to find out . If you changed the MAF for a cheap / foreign make you could have wasted your money as they often are rubbish ( assuming it was a new one fitted )

Thank you kindly for your reply , I've changed the oil and the filter and fuel filter air filter and replace the air intake sensor with original Bosch. Checked it with a proper diagnostic machine comes up with oil pressure sensor and p06dd. What I don't understand is plugging and unplugging air sensor start up as switch off make the problem go away for half an hour if the problem is the oil sensor and the valve.

Worth changing oil pressure switch / sensor , not dear

See if this applies to your car .

https://www.youtube.com/watch?v=lPRW8F6Sz-w

Hi hi I tried the main dealer they don't have it in stock till next week £76 is the price.

Hope it fixes your fault