Bobcat S550 P1511 Error Code
P1511 Error Code
DEF Quality Sensor Fault is the main cause of P1511 error.A significant number of consequences can be suffered due to an overheating engine with code P1511. The problem might be a blown gasket or something related to the fuel tank.
Tip For S550 Model
When the temperature is below -30 C (-20 F), hydrostatic oil must be warmed before starting. The hydrostatic system will not get enough oil at low temperatures and will be damaged. Park the machine in an area where the temperature will be above -18 C (0 F) if possible.