CATERPILLAR ACERT ENGINE DIAGNOSTIC CODES

This group provides information on the engine fault codes that could potentially appear on the LCD display at the center of your electronic dash when using the En­gine Diagnostics Menu feature. Refer to Chapter 59-104 in your service or operator manual for instruc­tions on reading and clearing fault codes. These codes can be used to help isolate the problem area in your en­gine. Refer to the appropriate Caterpillar Troubleshoot­ing Manual or contact your Caterpillar dealer for addi­tional information on isolating and repairing potential or existing problems.


J1939 SPN J1939 FMI DIAGNOSTIC CODE DESCRIPTION FLASH CODE
651 1-05 CYLINDER #1 INJECTOR CURRENT LOW 72
651 1-06 CYLINDER #1 INJECTOR CURRENT HIGH 72
652 2-05 CYLINDER #2 INJECTOR CURRENT LOW 72
652 2-05 CYLINDER #2 INJECTOR CURRENT HIGH 72
653 3-05 CYLINDER #3 INJECTOR CURRENT LOW 73
653 3-06 CYLINDER #3 INJECTOR CURRENT HIGH 73
654 4-05 CYLINDER #4 INJECTOR CURRENT LOW 73
654 4-06 CYLINDER #4 INJECTOR CURRENT HIGH 73
655 5-05 CYLINDER #5 INJECTOR CURRENT LOW 74
655 5-06 CYLINDER #5 INJECTOR CURRENT HIGH 74
656 6-05 CYLINDER #6 INJECTOR CURRENT LOW 74
656 6-06 CYLINDER #6 INJECTOR CURRENT HIGH 74
637 22-11 PRIMARY TO SECONDARY ENGINE SPEED SIGNAL CALIBRATION 42
637 22-13 ENGINE SPEED SIGNAL CALIBRATION NOT PERFORMED 42
644 30-08 PTO THROTTLE SIGNAL INVALID 29
644 30-13 PTO THROTTLE SIGNAL CALIBRATION 29
678 41-03 8 VOLT SUPPLY ABOVE NORMAL 21
678 41-04 8 VOLT SUPPLY BELOW NORMAL 21
158 43-02 IGNITION KEY SWITCH FAULT 71
XX 52-11 INLET AIR SHUTOFF SHUTDOWN 00
706 54-05 AUXILIARY OUTPUT #06 CURRENT LOW 66

J1939 SPN J1939 FMI DIAGNOSTIC CODE DESCRIPTION FLASH CODE
706 54-06 AUXILIARY OUTPUT #06 CURRENT HIGH 66
707 55-05 AUXILIARY OUTPUT #07 CURRENT LOW 67
707 55-06 AUXILIARY OUTPUT #07 CURRENT HIGH 67
723 64-02 LOSS OF SECONDARY ENGINE SPEED SIGNAL 34
592 71-00 IDLE SHUTDOWN OVERRIDE 01
592 71-01 IDLE SHUTDOWN OCCURRENCE 47
592 71-14 PTO SHUTDOWN OCCURRENCE 47
84 84-00 WHEEL-BASED VEHICLE OVERSPEED WARNING 41
84 84-01 LOSS OF WHEEL-BASED VEHICLE SPEED SIGNAL 31
84 84-02 INVALID WHEEL-BASED VEHICLE SPEED SIGNAL 36
84 84-08 WHEEL BASED VEHICLE SPEED OUT OF RANGE 36
84 84-10 WHEEL BASED VEHICLE SPEED RATE OF CHANGE 36
84 84-14 QUICKSTOP OCCURRENCE 00
91 91-08 ACCELERATOR PEDAL POSITION INVALID 32
91 91-13 ACCELERATOR PEDAL POSITION OUT OF CALIBRATION 28
100-01 100-01 LOW OIL PRESSURE WARNING 46
100-03 100-03 OIL PRESSURE SENSOR VOLTAGE HIGH 24
100-04 100-04 OIL PRESSURE SENSOR VOLTAGE LOW 24
100-11 100-11 VERY LOW OIL PRESSURE 46
102-03 102-03 BOOST PRESSURE SENSOR VOLTAGE HIGH 25
102-04 102-04 BOOST PRESSURE SENSOR VOLTAGE LOW 25
102-07 102-07 BOOST PRESSURE NOT RESPONDING 25
105-00 105-00 HIGH INTAKE MANIFOLD AIR TEMPERA­TURE WARNING 64
105-03 105-03 INTAKE MANIFOLD AIR TEMPERATURE SENSOR VOLTAGE HIGH 38
105-04 105-04 INTAKE MANIFOLD AIR TEMPERATURE SENSOR VOLTAGE LOW 38

J1939 SPN J1939 FMI DIAGNOSTIC CODE DESCRIPTION FLASH CODE
105-11 105-11 VERY HIGH INTAKE MANIFOLD AIR TEM­PERATURE WARNING 64
108-03 108-03 BAROMETRIC PRESSURE VOLTAGE HIGH 26
108-04 108-04 BAROMETRIC PRESSURE VOLTAGE LOW 26
108-10 108-10 BAROMETRIC PRESSURE SIGNAL RATE OF CHANGE 26
110-00 110-00 HIGH COOLANT TEMPERATURE WARNING 61
110-03 110-03 COOLANT TEMPERATURE SENSOR VOLT­AGE HIGH 27
110-04 110-04 COOLANT TEMPERATURE SENSOR VOLT­AGE LOW 27
110-11 110-11 VERY HIGH COOLANT TEMPERATURE 61
111-01 111-01 LOW COOLANT LEVEL WARNING 62
111-02 111-02 INVALID COOLANT LEVEL 12
111-03 111-03 COOLANT LEVEL SENSOR VOLTAGE HIGH 12
111-04 111-04 COOLANT LEVEL SENSOR VOLTAGE LOW 12
111-11 111-11 VERY LOW COOLANT LEVEL 62
111-14 111-14 LOW COOLANT LEVEL WARNING (LESS THAN 6 ENGINE HOURS) 62
1072-05 121-05 RETARDER SOLENOID LOW/HIGH VOLT­AGE LOW 14
1072-06 121-06 RETARDER SOLENOID LOW/HIGH VOLT­AGE HIGH 14
1073-05 122-05 RETARDER SOLENOID MED/HIGH VOLT­AGE LOW 14
1073-06 122-06 RETARDER SOLENOID MED/HIGH VOLT­AGE HIGH 14
XX 166-04 RATED ENGINE POWER SPECIAL IN­STRUCTIONS 00
168-02 168-02 INTERMITTENT BATTERY POWER TO THE ECM 51
171-03 171-03 OUTSIDE AIR TEMP SENSOR VOLTAGE HIGH 00
171-04 171-04 OUTSIDE AIR TEMP SENSOR VOLTAGE LOW 00
171 171-11 NO OUTSIDE AIR TEMP DATA 00
174 174-00 HIGH FUEL TEMP WARNING 65

J1939 SPN J1939 FMI DIAGNOSTIC CODE DESCRIPTION FLASH CODE
174-03 174-03 FUEL TEMP VOLTAGE HIGH 13
174-04 174-04 FUEL TEMP VOLTAGE LOW 13
190 190-00 ENGINE OVERSPEED WARNING 35
190 190-08 PRIMARY ENGINE SPEED LOSS OF SIG­NAL 34
XX 191-07 TRANSMISSION NOT RESPONDING 68
XX 224-11 THEFT DETERRENT ENABLED 00
639 231-02 J1939 DEVICE SENDING INCORRECT DATA 00
639 231-12 J1939 DEVICE NOT RESPONDING 00
620 232-03 5 VOLT SUPPLY ABOVE NORMAL 21
620 232-04 5 VOLT SUPPLY ABOVE NORMAL 21
597 246-11 BRAKE PEDAL SWITCH #1 FAULT 00
603 247-11 BRAKE PEDAL SWITCH #2 FAULT 00
631 252-11 ENGINE SOFTWARE INCORRECT 59
630 253-02 CHECK CUSTOMER OR SYSTEM PARAME­TERS 56
XX 253-11 CHECK TRANSMISSION CUSTOMER PA­RAMETERS 56
2949-05 283-05 INTAKE VALVE ACTUATION SYSTEM OIL PRESSURE SOLENOID CURRENT LOW 97
2949-06 283-06 INTAKE VALVE ACTUATION SYSTEM OIL PRESSURE SOLENOID CURRENT HIGH 97
2949-07 283-07 INTAKE VALVE ACTUATION SYSTEM OIL PRESSURE NOT RESPONDING 97
2988-05 284-05 ENGINE COOLANT DIVERTER SOLENOID CURRENT LOW 98
2988-06 284-06 ENGINE COOLANT DIVERTER SOLENOID CURRENT HIGH 98
2950-05 285-05 INTAKE VALVE ACTUATOR #1 CURRENT LOW 92
2950-06 285-06 INTAKE VALVE ACTUATOR #1 CURRENT HIGH 92
2950-07 285-07 INTAKE VALVE ACTUATOR #1 NOT RE­SPONDING 92
2951-05 286-05 INTAKE VALVE ACTUATOR #2 CURRENT LOW 92

2951-06 286-06 INTAKE VALVE ACTUATOR #2 CURRENT HIGH 92
2951-07 286-07 INTAKE VALVE ACTUATOR #2 NOT RE­SPONDING 92
2952-05 287-05 INTAKE VALVE ACTUATOR #3 CURRENT LOW 93
2952-06 287-06 INTAKE VALVE ACTUATOR #3 CURRENT HIGH 93
2952-07 287-07 INTAKE VALVE ACTUATOR #3 CURRENT NOT RESPONDING 93
2953-05 288-05 INTAKE VALVE ACTUATOR #4 CURRENT LOW 93
2953-06 288-06 INTAKE VALVE ACTUATOR #4 CURRENT HIGH 93
2953-07 288-07 INTAKE VALVE ACTUATOR #4 CURRENT NOT RESPONDING 93
2954-05 289-05 INTAKE VALVE ACTUATOR #5 CURRENT LOW 94
2954-06 289-06 INTAKE VALVE ACTUATOR #5 CURRENT HIGH 94
2954-07 289-07 INTAKE VALVE ACTUATOR #5 CURRENT NOT RESPONDING 94
2955-05 290-05 INTAKE VALVE ACTUATOR #6 CURRENT LOW 95
2955-06 290-06 INTAKE VALVE ACTUATOR #6 CURRENT HIGH 95
2955-07 290-07 INTAKE VALVE ACTUATOR #6 CURRENT NOT RESPONDING 95
2948-01 385-01 LOW INTAKE VALVE ACTUATION SYSTEM OIL PRESSURE 95
2948-03 385-03 INTAKE VALVE ACTUATION OIL PRESSURE VOLTAGE HIGH 95
2948-04 385-04 INTAKE VALVE ACTUATION OIL PRESSURE VOLTAGE LOW 95