Good afternoon all. My 2015 Passat TDI SE suddenly gave me a flashing glow plug light and CE light the other day. I found the top of my fuel filter leaking diesel and the filter itself pretty dirty. I replaced the filter and drove again. The glow plug light stayed off and the car drove fine until about 50 miles. Then it felt like I lost all acceleration power as if it slipped gears or something and the glow plug light came back on. I took it to an Autozone and got a basic code check and it came back with P0402 (Exhaust Gas Recirculation Flow Excessive Detected) and P0299 (Turbo/Super Charger Underboost). Would either of these codes put the car into limp mode?? And is what I'm experiencing even limp mode or is it a possible transmission issue? This Covid thing has really struck me hard financially and I cannot afford to take it to a dealer at the moment! Thanks in advance!!