Volkswagen Beetle p0222 16 Electronic Throttle Position Sensor 2 signal voltage is too low.

Reasons for low signal voltage of electronic throttle position sensor 2:

1. The throttle plug is flooded or rusted, resulting in poor contact.

2. The throttle position sensor is damaged.

3. The main plug of the engine computer has poor contact.

The throttle is dirty, clean it and re-match it. If it doesn't work, the throttle position sensor is broken and needs to be replaced by a special computer in the 4s shop.