What's the p2bac fault code mercedes Sprinter?

If You get a check engine light on Your Mercedes Sprinter the first thing You should do is try to stop moving as soon as possible. It can be dangerous to drive with a check engine light since it can cause more damage to Your vehicle's engine or transmission. Once You have stopped You can use an OBD II scan tool to read the ECU for any codes. If You have a code P2BAC then that means that there is a problem with the NOx system. This can mean that there is a problem with the EGR and it will be turned off. This can lead to Your vehicle running rough and may have some engine problems. I recommend replacing the sensor.