Merlo fault codes & repair guides
All 80 codes· 50 per page · page 2 of 2
| Code | Controller | Issue summary | Repair manual |
|---|---|---|---|
| 374 | — | Short Circuit in OUT 06 (Acceleration Relay) | Full repair manual for code 374 |
| 376 | — | Short Circuit in OUT 10 (Retract Support HR) | Full repair manual for code 376 |
| 0400CA | — | Short Circuit Between Fuel Solenoid Valve and Ground | Full repair manual for code 0400CA |
| 0400CB | — | Fuel Injector – Short to Battery | Full repair manual for code 0400CB |
| 0400CC | — | Fuel Injector – Open Circuit | Full repair manual for code 0400CC |
| 0401CA | — | Fuel Pressure Too High | Full repair manual for code 0401CA |
| 0401CB | — | Fuel Pressure Too Low | Full repair manual for code 0401CB |
| 0401CC | — | Fuel Pressure Sensor Fault | Full repair manual for code 0401CC |
| 418 | — | Relay Test Failed | Full repair manual for code 418 |
| 421 | — | Faulty Monitor Relay | Full repair manual for code 421 |
| 430 | — | Pressure Sensor Calibration Outside Limits | Full repair manual for code 430 |
| 434 | — | Supply Voltage Outside Limit Values | Full repair manual for code 434 |
| 442 – 445 | — | Pressure Sensor Supports Outside Limits | Full repair manual for code 442 – 445 |
| 447 | — | UGS Blocked | Full repair manual for code 447 |
| 448 – 450 | — | Keyboard Error | Full repair manual for code 448 – 450 |
| 462 | — | Heartbeat AE Missing (Pressure Equalization) | Full repair manual for code 462 |
| 001234 | — | NOx Sensor 1 – Error | Full repair manual for code 001234 |
| 001236 | — | Diesel Particulate Filter Clogged | Full repair manual for code 001236 |
| 001239 | — | AdBlue Level – Too Low | Full repair manual for code 001239 |
| 030028 | — | PWM Telescope 1 Short Circuit Vbat | Full repair manual for code 030028 |
| 030029 | — | PWM Telescope 2 – Short Circuit | Full repair manual for code 030029 |
| 030030 | — | Hydraulic Pressure Sensor Error | Full repair manual for code 030030 |
| 050001 | — | Battery Voltage – Too High | Full repair manual for code 050001 |
| 050002 | — | Battery Voltage – Too Low | Full repair manual for code 050002 |
| A00003 | — | Engine Overtemperature | Full repair manual for code A00003 |
| A00004 | — | Coolant Temperature Sensor Malfunction | Full repair manual for code A00004 |
| A00005 | — | Coolant Level Too Low | Full repair manual for code A00005 |
| A00006 | — | Coolant Pressure – Too High | Full repair manual for code A00006 |
| A00007 | — | Engine Oil Temperature Too High | Full repair manual for code A00007 |
| A00008 | — | Engine Oil Pressure Too Low | Full repair manual for code A00008 |
