Caterpillar SR4B troubleshooting: 4 fault codes and 11 symptom-cause-remedy entries from the manufacturer's own service documentation.
Caterpillar SR4B — full specs, parts & maintenance.
| Code | Meaning |
|---|---|
| g00604607 | The fault alarm indicator (3) flashes when the GSC detects an alarm fault. |
| 2301A Control | When the engine oil pressure is increased beyond the low oil pressure setpoint, the GSC will inform the governor that the engine speed should be increased from IDLE to RATED rpm. |
| 21 | Fault shutdown |
| 22 | Fault alarm |
| Symptom | Cause | Remedy |
|---|---|---|
| Low Oil Pressure — The engine oil pressure drops below the setpoints for low oil pressure shutdown that are programmed into the GSC; the low oil pressure indicator FLASHES, and the engine is shut down; the engine is not allowed to start until the fault is corrected | The engine oil pressure drops below the setpoints for low oil pressure shutdown that are programmed into the GSC | Correct the fault; the engine is not allowed to start until the fault is corrected |
| Emergency Stop — The operator presses the emergency stop push button (ESPB) on the front panel; the emergency stop indicator FLASHES and the engine is shut down; the engine is not allowed to start until the condition is corrected | The operator presses the emergency stop push button (ESPB) on the front panel | Correct the condition; the engine is not allowed to start until the condition is corrected |
| High Water Temperature — The engine coolant temperature rises above the setpoint for high water temperature shutdown that is programmed into the GSC; the high water temperature indicator FLASHES; the engine is shutdown and the engine is not allowed to start until the fault is corrected | The engine coolant temperature rises above the setpoint for high water temperature shutdown that is programmed into the GSC | Correct the fault; the engine is not allowed to start until the fault is corrected |
| Engine Overspeed — The engine speed exceeds the setpoint for engine overspeed that is programmed into the GSC; the engine overspeed indicator FLASHES; the engine is shutdown and the engine is not allowed to start until the fault is corrected | The engine speed exceeds the setpoint for engine overspeed that is programmed into the GSC | Correct the fault; the engine is not allowed to start until the fault is corrected |
| Low Coolant Level — The engine coolant level drops below the probe of the coolant loss sensor; the engine coolant level indicator FLASHES; the engine is shut down; the engine is not allowed to start until the fault is corrected | The engine coolant level drops below the probe of the coolant loss sensor | Correct the fault; the engine is not allowed to start until the fault is corrected |
| Overcrank — The engine does not start within the setpoint for total cycle crank time that is programmed into the GSC; the overcrank indicator FLASHES; the engine is not allowed to start until the fault is corrected | The engine does not start within the setpoint for total cycle crank time that is programmed into the GSC | Correct the fault; the engine is not allowed to start until the fault is corrected |
| Low Oil Pressure (GSC+) — The engine oil pressure drops below the setpoints for low oil pressure shutdown that are programmed into the GSC+; the low oil pressure indicator FLASHES, and the engine is shut down; the engine is not allowed to start until the fault is corrected | The engine oil pressure drops below the setpoints for low oil pressure shutdown that are programmed into the GSC+ | Correct the fault; the engine is not allowed to start until the fault is corrected |
| Emergency Stop (GSC+) — The operator presses the emergency stop push button (ESPB) on the front panel; the emergency stop indicator FLASHES and the engine is shut down; the engine is not allowed to start until the condition is corrected | The operator presses the emergency stop push button (ESPB) on the front panel | Correct the condition; the engine is not allowed to start until the condition is corrected |
| High Water Temperature (GSC+) — The engine coolant temperature rises above the setpoint for high water temperature shutdown that is programmed into the GSC+; the high water temperature indicator FLASHES; the engine is shutdown and the engine is not allowed to start until the fault is corrected | The engine coolant temperature rises above the setpoint for high water temperature shutdown that is programmed into the GSC+ | Correct the fault; the engine is not allowed to start until the fault is corrected |
| Engine Overspeed (GSC+) — The engine speed exceeds the setpoint for engine overspeed that is programmed into the GSC+; the engine overspeed indicator FLASHES; the engine is shutdown and the engine is not allowed to start until the fault is corrected | The engine speed exceeds the setpoint for engine overspeed that is programmed into the GSC+ | Correct the fault; the engine is not allowed to start until the fault is corrected |
| Overcrank (GSC+) — The engine does not start within the setpoint for total cycle crank time that is programmed into the GSC+; the overcrank indicator FLASHES; the engine is not allowed to start until the fault is corrected | The engine does not start within the setpoint for total cycle crank time that is programmed into the GSC+ | Correct the fault; the engine is not allowed to start until the fault is corrected |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.
Documented causes: The engine oil pressure drops below the setpoints for low oil pressure shutdown that are programmed into the GSC. See the table for the matching fixes.
Documented causes: The operator presses the emergency stop push button (ESPB) on the front panel. See the table for the matching fixes.
Documented causes: The engine coolant temperature rises above the setpoint for high water temperature shutdown that is programmed into the GSC. See the table for the matching fixes.