ENGINE AR-COMPLETE 2549573 - Caterpillar

Table 1
Diagnostic Trouble Codes For The CX31 Series Transmissions
For troubleshooting, see the procedure with the same "SPN" and "FMI".
"SPN"/"CID" Description
SPN 91 Accelerator Pedal
FMI 9 Abnormal update
FMI 19 Data error
SPN 126 Transmission Oil Filter Differential Pressure Sensor
FMI 3 Voltage above normal
FMI 16 Data valid but above normal operating range (moderate severity)
SPN 158 Battery Potential (Keyswitch)
FMI 2 Data that is erratic, intermittent, or incorrect
SPN 161 Transmission Input Shaft Speed
FMI 8 Abnormal frequency
SPN 168 Electrical System Voltage
FMI 3 Voltage above normal
FMI 4 Voltage below normal
SPN 177 Temperature Sensor (Transmission Oil)
FMI 3 Voltage above normal
FMI 4 Voltage below normal
FMI 16 Data valid but above normal operation range (moderate severity)
SPN 190 Speed Sensor (Engine)
FMI 8 Abnormal frequency
SPN 191 Transmission Output Speed Sensor
FMI 8 Abnormal frequency
FMI 14 Special Instruction
SPN 513 Engine Torque
FMI 9 Abnormal update
FMI 19 Data error
SPN 525 Transmission Gear Request
FMI 9 Abnormal update
SPN 639 J1939 Data Link
FMI 9 Abnormal update
FMI 14 Special Instruction
SPN 734 Transmission Clutch Solenoid 1
FMI 3 Voltage above normal
FMI 5 Current below normal or open circuit
FMI 6 Current above normal or closed circuit
SPN 735 Transmission Clutch Solenoid 2
FMI 3 Voltage above normal
FMI 5 Current below normal or open circuit
FMI 6 Current above normal or closed circuit
SPN 736 Transmission Clutch Solenoid 3
FMI 3 Voltage above normal
FMI 5 Current below normal or open circuit
FMI 6 Current above normal or closed circuit
SPN 737 Transmission Clutch Solenoid 4
FMI 3 Voltage above normal
FMI 5 Current below normal or open circuit
FMI 6 Current above normal or closed circuit
SPN 738 Transmission Clutch Solenoid 5
FMI 3 Voltage above normal
FMI 5 Current below normal or open circuit
FMI 6 Current above normal or closed circuit
SPN 739 Transmission Clutch Solenoid 6
FMI 3 Voltage above normal
FMI 5 Current below normal or open circuit
FMI 6 Current above normal or closed circuit
SPN 740 Transmission Lockup Clutch Solenoid
FMI 3 Voltage above normal
FMI 5 Current below normal or open circuit
FMI 6 Current above normal or closed circuit
SPN 744 Retarder Modulation Solenoid
FMI 3 Voltage above normal
FMI 5 Current below normal or open circuit
FMI 6 Current above normal or closed circuit
SPN 1716 Non-Engine Retarder Selection
FMI 8 Abnormal frequency, pulse width, or period
FMI 9 Abnormal update rate
FMI 13 Out of calibration
FMI 19 Data error
SPN 3027 Transmission Oil Level Sensor
FMI 3 Voltage above normal
FMI 4 Voltage below normal
SPN 3463 Engagement Status ­ Transfer case output shaft PTO
FMI 2 Data erratic, intermittent, or incorrect.
SPN 3509 5 Volt Sensor Supply
FMI 3 Voltage above normal
FMI 4 Voltage below normal
SPN 3823 Torque Converter Oil Temperature Sensor
FMI 0 High Torque Converter Outlet Temperature High - Moderate Severity
FMI 3 Voltage above normal
FMI 4 Voltage below normal
FMI 16 High Torque Converter Outlet Temperature High - Most Severe
SPN 3824 Transmission Latching Gear
FMI 3 Voltage above normal
FMI 5 Current below normal or open circuit
FMI 6 Current above normal or closed circuit
SPN 3825 Transmission Output Speed Sensor 2
FMI 8 Abnormal frequency