Troubleshooting
Printed in U.S.A. 175 50940411/G0219
652 11 P1263 Injector 1 (Cylinder Number 3) Injector 1 unclassified
652 P1269 Injector 4 (Cylinder Number 3) Injector 4 unclassified
653 3 P1265 Injector 2 (Cylinder Number 2) Injector 2 short-circuit
653 5 P0202 Injector 2 (Cylinder Number 2)
Injector 2 open circuit (inherent location of the
injector)
653 6 P0265 Injector 2 (Cylinder Number 2) Injector 2 coil short-circuit
653 11 P1266 Injector 2 (Cylinder Number 2) Injector 2 unclassified
654 3 P1262 Injector 3 (Cylinder Number 1) Injector 3 short-circuit
654 5 P0201 Injector 3 (Cylinder Number 1)
Injector 3 open circuit (inherent location of the
injector)
654 6 P0262 Injector 3 (Cylinder Number 1) Injector 3 coil short-circuit
654 11 P1263 Injector 3 (Cylinder Number 1) Injector 3 unclassified
1078 4 P0340 Fuel Injection Pump Speed Sensor Shorted to low source
1079 2 P1644 Sensor 5V Intermittent fault
1079 3 P0643 Sensor 5V Shorted to high source
1079 4 P0642 Sensor 5V Shorted to low source
1136 0 P0634 ECU Internal Temperature Too high
1136 2 P1664 ECU Internal Temperature Sensor Intermittent fault
1136 3 P0669 ECU Internal Temperature Sensor Shorted to high source
1136 4 P0668 ECU Internal Temperature Sensor Shorted to low source
1202 2 U423 Immobilizer System fault
1209 3 P0473 EGR High Pressure Side Sensor EGR low pressure side sensor fault (high voltage)
1209 4 P0472 EGR High Pressure Side Sensor EGR low pressure side sensor fault (low voltage)
1209 13 P0471 EGR High Pressure Side Sensor Abnormal learning value
1209 10 P1679 EGR High Pres. Sensor Malfunction After-treatment error
1210 3 P1203 Engine Fuel Rack Position Sensor Shorted to high source
1210 4 P1202 Engine Fuel Rack Position Sensor Shorted to low source
1485 2 P068A Main Relay
Power off without main relay self-holding/main relay
early opening
1485 4 P0686 ECU Main Relay Shorted to low source
1485 7 P068B Main Relay Main relay contact stuck
2791 0 P0404 EGR Valve EGR over-voltage malfunction
2791 1 P1404 EGR Valve EGR low voltage malfunction
2791 7 P1409 EGR Valve EGR feedback malfunction
2791 9 U0401 EGR Valve EGR ECM data fault
2791 12 P0403 EGR Valve Open circuit between the EGR motor coils
2797 6 P1146 Injector (Common)
Injector drive circuit (bank 1) short-circuit (common
circuit for number 1, number 4)
2798 6 P1149 Injector (Common)
Injector drive circuit (bank 2) short-circuit (common
circuit for number 2, number 3)
2950 3 P1658 Intake Throttle Drive Circuit
Power short-circuit of throttle valve drive H bridge
output 1
Table 55: Yanmar Engine Diagnostic Trouble Codes (DTC)
DTC Error Item
SPN FMI P-Code Part State
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