Use the "DIAGNOSTIC" lamp or an electronic service tool to determine the diagnostic flash code.
Use the following procedure to retrieve the flash codes if the engine is equipped with a "DIAGNOSTIC" lamp:
- Move the keyswitch from the on/off two times within 3 seconds.
A flashing YELLOW lamp indicates a 3-digit code for the engine. The sequence of flashes represents the system diagnostic message. Count the first sequence of flashes in order to determine the first digit of the flash code. After a two second pause, the second sequence of flashes will identify the second digit of the flash code. After the second pause, the third sequence of flashes will identify the flash code.
Any additional flash codes will follow a pause. These codes will be displayed in the same manner. Flash Code 551 indicates that No Detected Faults have occurred since the ignition keyswitch has been turned to the ON position.
For further information, assistance for repairs, or troubleshooting, refer to the Service Manual or consult your Cat dealer.
Table1 lists the flash codes and the table also gives a brief description of the flash codes.
Note: Table1 indicates the potential effect on engine performance with "ACTIVE" flash codes.
Some codes record events. Also, some codes may also indicate that a mechanical system needs attention. Troubleshooting is not required for code "551". Code 001 will not display a flash code. Some codes will limit the operation or the performance of the engine.
Table 1 indicates the potential effect on the engine performance with active flash codes. Table 1 also forms a list of Electronic diagnostic codes and descriptions.
| Flash Codes for the Industrial Engine (1) | ||||||||
| Diagnostic Flash Code | Effect On Engine Performance (2) | Suggested Operator Action | ||||||
| Description | Engine Misfire | Low Power | Reduced Engine Speed | Engine Shutdown | Service (3) | Schedule a Service. (4) | ||
| 111 | No. 1 Injector Fault | X | X | X | ||||
| 112 | No. 2 Injector Fault | X | X | X | ||||
| 113 | No. 3 Injector Fault | X | X | X | ||||
| 114 | No. 4 Injector Fault | X | X | X | ||||
| 133 | Intake Manifold Air Temperature sensor fault (5) | X | X | |||||
| 141 | Primary Engine Speed/Timing Sensor Fault (6) | X | X | |||||
| 142 | Secondary Engine Speed/Timing Sensor Fault | X | ||||||
| 143 | Engine Timing Calibration Fault | X | X | |||||
| 144 | Engine Operation Mode Selector Switch Fault | X | X | |||||
| 151 | Air Inlet Pressure Sensor | X | X | |||||
| 154 | Throttle Position Sensor Fault | X | X | |||||
| 155 | Secondary Throttle Position sensor Fault | X | X | |||||
| 157 | Engine Oil Pressure Sensor Fault | X | X | |||||
| 159 | Fuel Rail Pressure Sensor Fault | X | X | |||||
| 162 | Fuel Rail Pressure Valve Solenoid Fault | X | X | X | ||||
| 168 | Engine Coolant Temperature Sensor Faul | X | ||||||
| 169 | Low Engine Coolant | X | X | |||||
| 177 | Turbo Wastegate Actuator Fault | X | ||||||
| 185 | High Exhaust Temperature | X | X | |||||
| 197 | Intake Manifold Boost Pressure Fault | X | X | |||||
| 199 | Glow Plug Start Relay Fault | X | ||||||
| 233 | Ether Injection Control Solenoid | X | ||||||
| 245 | Idle Validation Switch 1 | X | ||||||
| 246 | Idle Validation Switch 2 | X | ||||||
| 253 | Engine Fuel Supply Pump Relay | X | ||||||
| 415 | Software Mismatch | X | X | X | ||||
| 426 | Machine Security Module | X | ||||||
| 429 | Ignition Key Switch Fault | X | ||||||
| 511 | ECM Power Supply Voltage Fault | X | X | |||||
| 514 | SAE J1939 Data Link Fault | X | X | |||||
| 516 | 5 Volt Sensor DC Power Supply Fault | X | X | X | X | |||
| 517 | 8 Volt Sensor DC Power Supply Fault | X | X | |||||
| 527 | Customer/System Parmeter Fault | X | X | X | ||||
| 551 | System check
No faults detected |
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| (1) | If warning lamps are installed, refer to this table. For installations that have electronic displays, refer to the OEM for information. |
| (2) | An "X" indicates that the effect on engine performance may occur if the code is active. |
| (3) | The operator should go to the nearest location that has a qualified service program. |
| (4) | Schedule Service: The problem should be investigated when the operator has access to a qualified service program. |
| (5) | These Flash Codes may affect the system under specific environmental conditions such as engine start-up at cold temperature and cold-weather operation at high altitudes. |
| (6) | If the primary engine speed/timing sensor fails there is no automatic protection against reverse running. In this event, Stop the engine immediately. Turn the keyswitch to the "OFF" position. In order to check the correct operation of the sensor, refer to Troubleshooting, "Speed/Timing - Test". |