I have recently bought a 2007 1.4 VW Polo. I am still adjusting to driving the car and one thing I have managed quite a few times is going uphill in too higher gear or shifting up too soon (my previous car had a bigger engine). However when I do this in the polo I have noticed it shudders - I assumed this was normal as when I shifted down a gear it would stop shuddering and I could shift up once I picked up some more speed.
What worries me is sometimes when I do this the check engine light flashed for maybe 3 seconds until I shift down and then it goes out. After it does this I always check for error codes using my ODB scanner but no errors are every found... Is this maybe just normal behaviour for the polo because it gets close to stalling? The car runs fine otherwise and the CEL never comes on at any other time.