So heading down to Worksop for a wedding day, car spits out the restricted performance warning, obviously car is a bit slower but everything all good and drives another 30 miles to Worksop. So we leave the car overnight and head out this morning for breakfast and car drives fine, warning gone , no lights etc.

Heading back home after 30-40 miles of away driving again RP warning comes on again, car drives home all fine except reduced acceleration.

So head home and get my code reader and stick it in, it shows a p006a or p006e error - I pressed the next button on my code read and it cleared the code before I could read it properly, think it was something like Air map sensor correlation volume.

Can anyone give any pointers on this error and why its only happened after Mway driving.
Could the MAF sensors need a clean and is there a specific way of doing this or could we be looking at a cracked manifold???..