The APM303 is a generator-set controller. It is used on generator sets from Baudouin, John Deere, Kohler and SDMO, including the B44, J 110 K, J44 and B44.
Used across brands: Baudouin, John Deere, Kohler, SDMO
Also fitted to: Kohler K9, SDMO K9.
| Code | Meaning | Remedy |
|---|---|---|
| 000970 | External Shutdown Switch Activated | Not Engine Fault. Check Other Shutdown Devices |
| 000971 | External Fuel Derate Switch Active | Not Engine Fault. Check Other Shutdown Devices |
| 001069 | Tire Size Invalid | Contact Servicing Dealer |
| 001079 | Tire Size Error | Contact Servicing Dealer |
| 001080 | Fuel Rail Pressure Sensor Supply Voltage High | Check Wiring |
| 001080 | Fuel Rail Pressure Sensor Supply Voltage Low | Check Wiring |
| 001080 | Sensor Supply 1 Voltage High | Check Wiring |
| 001080 | Sensor Supply 1 Voltage Low | Check Wiring |
| 001109 | Engine Protection Shutdown Warning | Shut Down Engine, Check Diagnostic Trouble Codes |
| 001110 | Engine Protection Shutdown Active | Shut Down Engine, Check Diagnostic Trouble Codes |
| 001347 | High Pressure Fuel Pump Control Valve Signal Out of Range High | Contact Servicing Dealer |
| 001568 | Requested Torque Curve Signal Unreliable | Contact Servicing Dealer |
| 001569 | Engine in Derate Condition | Check Diagnostic Trouble Codes |
| 002000 | Security Violation | Contact Servicing Dealer |
| 005 | High Pressure Fuel Pump Solenoid Number 1 Circuit Has High Resistance | Check Pump Wiring |
| 007 | High Pressure Fuel Pump Not Able to Meet Required Rail Pressure | Check Fuel Filter and Lines |
| 50-10 011813 PN=115 | Improper type of oil | Drain, fill crankcase with oil of proper viscosity and quality. |
| SPN 000028 FMI 03 | Throttle #3 Signal Out of Range High | Check Sensor and Wiring |
| SPN 000028 FMI 04 | Throttle #3 Signal Out of Range Low | Check Sensor and Wiring |
| SPN 000029 FMI 03 | Throttle #2 Signal Out of Range High | Check Sensor and Wiring |
| SPN 000029 FMI 04 | Throttle #2 Signal Out of Range Low | Check Sensor and Wiring |
| SPN 000084 FMI 31 | Vehicle Speed Signal Unreliable | Contact Servicing Dealer |
| SPN 000091 FMI 03 | Throttle #1 Signal Out of Range High | Check Switch and Wiring |
| SPN 000091 FMI 04 | Throttle #1 Signal Out of Range Low | Check Switch and Wiring |
| SPN 000091 FMI 09 | Throttle #1 Communication Signal Erratic | Check Sensor and Wiring |
| SPN 000094 FMI 03 | Low Pressure Fuel Signal Out of Range High | Check Sensor and Wiring |
| SPN 000094 FMI 04 | Low Pressure Fuel Signal Out of Range Low | Check Sensor and Wiring |
| SPN 000094 FMI 10 | Low Pressure Fuel Rate of Change Abnormal | Contact Servicing Dealer |
| SPN 000094 FMI 13 | Low Pressure Fuel Out of Calibration | Contact Servicing Dealer |
| SPN 000094 FMI 17 | High Pressure Fuel System- Pressure Slightly Low | Contact Servicing Dealer |
| SPN 000097 FMI 00 | Water in Fuel Continuously Detected | Contact Servicing Dealer |
| SPN 000097 FMI 03 | Water-in-Fuel Signal Out of Range High | Check Sensor and Wiring |
| SPN 000097 FMI 04 | Water-in-Fuel Signal Out of Range Low | Check Sensor and Wiring |
| SPN 000097 FMI 16 | Water in Fuel Detected | Stop and Drain Water Separator |
| SPN 000100 FMI 01 | Engine Oil Pressure Signal Extremely Low | Check Oil Level |
| SPN 000100 FMI 03 | Engine Oil Pressure Signal Out of Range High | Check Sensor and Wiring |
| SPN 000100 FMI 04 | Engine Oil Pressure Signal Out of Range Low | Check Sensor and Wiring |
| SPN 000100 FMI 18 | Engine Oil Pressure Signal Moderately Low | Check Oil Level |
| SPN 000105 FMI 00 | Intake Manifold Air Temperature Signal Extremely High | Check Air Cleaner, Aftercooler, or Room Temperature |
| SPN 000105 FMI 03 | Intake Manifold Air Temperature Signal Out of Range High | Check Sensor and Wiring |
| SPN 000105 FMI 04 | Intake Manifold Air Temperature Signal Out of Range Low | Check Sensor and Wiring |
| SPN 000105 FMI 16 | Intake Manifold Air Temperature Signal Moderately High | Check Air Cleaner, Aftercooler, or Room Temperature |
| SPN 000107 FMI 00 | Air Filter Pressure Differential Extremely High | Check for plugged air filter |
| SPN 000110 FMI 00 | Engine Coolant Temperature Signal Extremely High | Check Cooling System, Reduce Power |
| SPN 000110 FMI 03 | Engine Coolant Temperature Signal Out of Range High | Check Sensor and Wiring |
| SPN 000110 FMI 04 | Engine Coolant Temperature Signal Out of Range Low | Check Sensor and Wiring |
| SPN 000110 FMI 15 | Engine Coolant Temperature Signal Slightly High | Check Cooling System, Reduce Power |
| SPN 000110 FMI 16 | Engine Coolant Temperature Signal Moderately High | Check Cooling System, Reduce Power |
| SPN 000111 FMI 01 | Engine Coolant Level Low | Check Operator's Manual, "Adding Coolant" |
| SPN 000158 FMI 17 | ECU Power Down Error (Internal ECU Problem) | Contact Servicing Dealer |
| SPN 000160 FMI 02 | Axle Speed Signal Unreliable | Contact Servicing Dealer |
| SPN 000174 FMI 00 | Fuel Temperature Signal Extremely High | Add Fuel or Switch Fuel Tanks |
| SPN 000174 FMI 03 | Fuel Temperature Signal Out of Range High | Check Sensor and Wiring |
| SPN 000174 FMI 04 | Fuel Temperature Signal Out of Range Low | Check Sensor and Wiring |
| SPN 000174 FMI 16 | Fuel Temperature Signal Moderately High | Add Fuel or Switch Fuel Tanks |
| SPN 000189 FMI 00 | Engine Speed Derate Condition Exists | Check Diagnostic Trouble Codes or Contact Servicing Dealer |
| SPN 000190 FMI 00 | Engine Speed Extremely High | Reduce Engine Speed |
| SPN 000190 FMI 16 | Engine Speed Moderately High | Reduce Engine Speed |
| SPN 000611 FMI 03 | Injector Shorted to Power | Check Wiring |
| SPN 000611 FMI 04 | Injector Shorted to Ground | Check Wiring |
Fault codes and symptom→remedy steps extracted from this controller’s service/owner documentation; verify against the official manual before servicing. Aggregated from the service documentation of generator sets built on this controller.