23 Secure Files - MTU generator fault/alarm codes with symptom, cause and remedy — compiled from Secure Files - MTU service and controller documentation.
| Code | Meaning / symptom | Cause | Remedy |
|---|---|---|---|
| AL MCR exceeded | DBR/MCR Function: MCR (Maximum Continuous Rating) is exceeded. | ||
| AL Open Load | Open load in injector cable of cylinder B2 | Check cable and solenoid if open load (e.g. replace injector) ==> after cycle curing of failure | |
| AL Power Stage Low | Internal error of electronic (electronic defect possible) | Start ITS ==> if electronic o.k. continue to pay attention to messages. If bit "1.1020.021" (Power Stage Failure: Stop Engine) set ==> Engine stop. | |
| AL Wiring TO 1 | Short circuit or open load on transistor output 1 (TO 1). | ||
| AL Wiring TO 2 | Short circuit or open load on transistor output 2 (TO 2). | ||
| AL Wiring TO 3 | Short circuit or open load on transistor output 3 (TO 3). | ||
| AL Wiring TO 4 | Short circuit or open load on transistor output 4 (TO 4). | ||
| AL Wiring TOP 1 | Short circuit or open load on transistor output plant 1 (TOP 1). | ||
| AL Wiring TOP 2 | Short circuit or open load on transistor output plant 2 (TOP 2). | ||
| AL Wiring TOP 3 | Short circuit or open load on transistor output plant 3 (TOP 3). | ||
| AL Wiring TOP 4 | Short circuit or open load on transistor output plant 4 (TOP 4). | ||
| HI T-Coolant Red | Redundant coolant temperature too high (limit 1) | Check circulation of coolant | |
| LO P-Lube Oil Red | Redundant pressure of lube oil too low (limit 1). | ||
| SS P-Lube Oil Red | Redundant pressure of lube oil too low (limit 2). | ||
| SS T-Coolant Red | Redundant coolant temperature too high (limit 2) | Check circulation of coolant | |
| SYS_ERR_CAN_A_BUS_OFF | First line: C = Alarm was active during the last four to twelve hours Second line: Running text, providing more information about the fault currently displayed | ||
| SYS_ERR_CAN_A_OVERRUN | First line: E = Alarm was active more than twelve hours ago Second line: Running text, providing more information about the fault currently displayed | ||
| SYS_ERR_SUPPLY | First line: C = Alarm was active during the last four hours Second line: Running text, providing more information about the fault currently displayed | ||
| SYS_ERR_SUPPLY_SD | First line: B = Alarm was active during the last hour Second line: Running text, providing more information about the fault currently displayed | ||
| SYS_ERR_TEMP | First line: A = Currently active alarms Second line: Running text, providing more information about the fault currently displayed | ||
| SYS_ERR_TEMP_SD | First line: # (2) = Alarm is no longer active, does not appear on next power-up Second line: Running text, providing more information about the fault currently displayed | ||
| TD P-Oil Sensor Deviation | Maximum deviation of P-Oil sensors | ||
| TD T-Coolant Sensor Deviation | Maximum deviation of T-Coolant sensors |
Compiled from Secure Files - MTU service manuals and controller documentation. Cause/remedy shown where extracted; always verify against the manual for your exact model.
Open load in injector cable of cylinder B2. Remedy: Check cable and solenoid if open load (e.g. replace injector) ==> after cycle curing of failure.
Internal error of electronic (electronic defect possible). Remedy: Start ITS ==> if electronic o.k. continue to pay attention to messages. If bit "1.1020.021" (Power Stage Failure: Stop Engine) set ==> Engine stop..
Redundant coolant temperature too high (limit 1). Remedy: Check circulation of coolant.
Redundant coolant temperature too high (limit 2). Remedy: Check circulation of coolant.