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NOTE:
For technical assistance on engine codes, see your Technical Manual or John Deere dealer.
When error is detected, an error number will display on tachometer. If more than one error is detected, each number will display for 6 seconds and then next error number(s) will be displayed.
| Fault Code |
Description |
| 18 |
Coolant Temperature Input Voltage too High |
| 19 |
Coolant Temperature Input Voltage too Low |
| 21 |
Sensor Supply Voltage too High |
| 22 |
Sensor Supply Voltage too Low |
| 25 |
Manifold Air Temperature Input Resistance too High |
| 26 |
Manifold Air Temperature Input Resistance too Low |
| 28 |
Engine Control Unit Failure |
| 31 |
Rack Measurement Error (Engine Off) |
| 34 |
Rack Position Error |
| 35 |
Rack Position Voltage too High |
| 36 |
Rack Position Voltage too Low |
| 37 |
Fuel Temperature Input Voltage too High |
| 38 |
Fuel Temperature Input Voltage too Low |
| 41 |
Start Signal Missing |
| 42 |
Engine Overspeed |
| 44 |
Auxiliary Speed Input Error |
| 46 |
Start Signal Always Active |
|
| Fault Code |
Description |
| 53 |
Rack Instability |
| 54 |
Power Problem To ECU |
| 61 |
Coolant Level Low |
| 62 |
Coolant Temperature Warning Threshold |
| 63 |
Coolant Temperature Above Shutdown Threshold |
| 66 |
Coolant Temperature Above Warning Threshold |
| 68 |
Fuel Derate Active For Engine Protection |
| 71 |
Diagnostic Codes Output Signal Stuck High (generated by code reader) |
| 72 |
Diagnostic Codes Output Signal Stuck Low (generated by code reader) |
| 73 |
Fuel Flow/Throttle Output Signal Stuck High (generated by code reader) |
| 74 |
Fuel Flow/Throttle Output Signal Stuck Low (generated by code reader) |
| 75 |
Open in Rack Actuator Circuit |
| 76 |
Rack Actuator Circuit Grounded |
| 81 |
Fuel Temperature Above Warning Threshold |
| 85 |
Speed Sensor Input is Open |
| 86 |
Speed Sensor Input Voltage is To Low |
| 87 |
Speed Sensor Input Voltage is To High |
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