MBE 4000 DDEC VI Troubleshooting – Section 121 SPN 3659 – Electronic Unit Pump #1 Not Operating Normally
MBE 4000 DDEC VI Troubleshooting – Section 120 SPN 3610 – DPF Outlet Pressure Sensor Above or Below Normal Operating Range
MBE 4000 DDEC VI Troubleshooting – Section 119 SPN 3609 – DPF Inlet Pressure Sensor Above or Below Normal Operating Range