V6 TDI AKE Starting Problems: Cold or Warm Engine?

Hello everyone, I'm having trouble starting the engine. It starts poorly whether it's cold or warm. I've already adjusted the fuel injection timing to 2 degrees BTDC (Before Top Dead Center), but it didn't work. I've also tried 2 degrees ATDC (After Top Dead Center), but still no luck.

"Set to 0 degrees, but no success. I don't see any air bubbles in the fuel line. What could be the problem with the NHG (knock sensor)? The error memory is empty. When I disconnect the connector from the NHG, there's no change in the engine sound. I think it should be knocking or something, but I'm not sure."

People, please help me, I'm really desperate with my Audi.

It's been a while, but have you ever replaced the coolant temperature sensor? It's located in the "V" on the right cylinder bank and could be responsible for the issue. The price is around 20€ at .

Before replacing the G 62, check the MWB (Multifunction Wheel Bearing). You can see the sensor value there. Alternatively, check the error memory of the engine control unit or the fuse box. The error is often stored there, but not always.