Engine light is on and engine losses power going up hill, any ideas? on 2003 Volkswagen Jetta TDI

Same as above

Asked by for the 2003 Volkswagen Jetta TDI
The code for the check engine light is the first step.
Doing anything else before you do this is a waste of time.
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Bring it by my shop in Scarborough and I will give you a free engine diagnostic,
Without knowing what codes are there it is hard to diagnose although I know of many common problems, such as plugging of the intake with soot and such!