Cummins/Onan 60.0 DYA 15R troubleshooting: 11 fault codes and symptom-cause-remedy entries from the manufacturer's own service documentation.
Cummins/Onan 60.0 DYA 15R — full specs, parts & maintenance.
All Cummins/Onan fault codes →
| Symptom | Remedy |
|---|---|
| Engine stops cranking and fault lamp lights, after cranking approximately 75 seconds. | See engine service manual for troubleshooting fuel system. |
| Fault lamp lights immediately after engine starts. | Check for: Overspeed condition as engine starts. |
| Fault lamp lights and engine shuts down after running for a period. | Check the following: - Oil level. Engine will shut down if sensor is closed. - Check engine manual for troubleshooting oil system. - High engine temperature. Check coolant level; check water flow (city water cooled systems); check radiator. |
| Overcrank fault lamp lights and engine stops cranking after approximately 75 seconds. | See engine service manual for troubleshooting fuel system. After correcting fault, reset engine monitor relay by placing Run-Stop/Reset-Remote switch to Stop/Reset position, depressing Reset button, then to the required running position. |
| Engine runs, shuts down, cranks for 75 seconds, cranking cycle stops, overcrank light ON. | Check fuel supply. |
| *Low oil pressure shutdown. | A. Oil level. Replenish if necessary. b. Sensor. Faulty sensor will shut down engine. c. Refer to engine service manual for troubleshooting guide for oil system. |
| "High engine temperature shutdown. | A. Coolant level. Replenish if necessary. b. City water cooled sets. Check water flow, valves, etc. c. Check sensor; check thermostat. d. Radiator model, check fan belts, radiator for obstructions, etc. |
| "Overspeed shutdown. | Check governor and throttle linkages for freedom of movement. Check overspeed switch. |
| "Overspeed light on, no shutdown. | Disconnect wire at TB11-29. Light on after reset; replace engine monitor board. |
| "Low oil pressure light ON. No shutdown. | Disconnect wire at TB11-30. Light ON after relay reset. Replace engine monitor board. |
| "High engine temperature light ON. No shutdown. | Disconnect wire at TB11-31. Light ON after relay reset. Replace engine monitor board. |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.