Cross-Reference Information for Diagnostic Codes
Table 1 is a list of the diagnostic codes for the engine. The diagnostic codes are cross-referenced with the appropriate functional test or the procedure that can be used to troubleshoot the code.
Further explanations of diagnostic codes are described after Table 1.
Portions of this material are reprinted with permission from SAE J1939DA_201607© 2016 SAE International. SAE International is not responsible for any use or translation of this material, in whole or in part. Please contact SAE International to obtain a complete copy of SAE J1939DA_201607, the official definitive source of this standard.
| Cross-Reference from CID-FMI Code to Flash Code to SPN-FMI Code to Functional Test or Procedure | |||
|---|---|---|---|
| CID-FMI Code | Flash Code | SPN-FMI Code | Functional Test or Procedure |
| 1-5 Cylinder #1 Injector open circuit | 71 | 651-06 | "Injector Solenoids" |
| 1-6 Cylinder #1 Injector short | 71 | 651-05 | "Injector Solenoids" |
| 2-5 Cylinder #2 Injector open circuit | 72 | 652-06 | "Injector Solenoids" |
| 2-6 Cylinder #2 Injector short | 72 | 652-05 | "Injector Solenoids" |
| 3-5 Cylinder #3 Injector open circuit | 73 | 653-06 | "Injector Solenoids" |
| 3-6 Cylinder #3 Injector short | 73 | 653-05 | "Injector Solenoids" |
| 4-5 Cylinder #4 Injector open circuit | 74 | 654-06 | "Injector Solenoids" |
| 4-6 Cylinder #4 Injector short | 74 | 654-05 | "Injector Solenoids" |
| 5-5 Cylinder #5 Injector open circuit | 75 | 655-06 | "Injector Solenoids" |
| 5-6 Cylinder #5 Injector short | 75 | 655-05 | "Injector Solenoids" |
| 6-5 Cylinder #6 Injector open circuit | 76 | 656-06 | "Injector Solenoids" |
| 6-6 Cylinder #6 Injector short | 76 | 656-05 | "Injector Solenoids" |
| 7-5 Cylinder #7 Injector open circuit | 77 | 657-06 | "Injector Solenoids" |
| 7-6 Cylinder #7 Injector short | 77 | 657-05 | "Injector Solenoids" |
| 8-5 Cylinder #8 Injector open circuit | 78 | 658-06 | "Injector Solenoids" |
| 8-6 Cylinder #8 Injector short | 78 | 658-05 | "Injector Solenoids" |
| 9-5 Cylinder #9 Injector open circuit | 79 | 659-06 | "Injector Solenoids" |
| 9-6 Cylinder #9 Injector short | 79 | 659-05 | "Injector Solenoids" |
| 10-5 Cylinder #10 Injector open circuit | 80 | 660-06 | "Injector Solenoids" |
| 10-6 Cylinder #10 Injector short | 80 | 660-05 | "Injector Solenoids" |
| 11-5 Cylinder #11 Injector open circuit | 81 | 661-06 | "Injector Solenoids" |
| 11-6 Cylinder #11 Injector short | 81 | 661-05 | "Injector Solenoids" |
| 12-5 Cylinder #12 Injector open circuit | 82 | 662-06 | "Injector Solenoids" |
| 12-6 Cylinder #12 Injector short | 82 | 662-05 | "Injector Solenoids" |
| 91-8 Throttle Position signal abnormal | 32 | 91-08 | "Speed Control" |
| 94-3 Fuel Pressure open/short to +batt | 37 | 94-03 | "Analog Sensor (Active)" |
| 94-4 Fuel Pressure short to ground | 37 | 94-04 | "Analog Sensor (Active)" |
| 100-3 Engine Oil Pressure open/short to +batt | 24 | 1208-03 | "Analog Sensor (Active)" |
| 100-4 Engine Oil Pressure short to ground | 24 | 1208-04 | "Analog Sensor (Active)" |
| 101-3 Crankcase Pressure open/short to +batt | (1) | 101-03 | "Analog Sensor (Active)" |
| 101-4 Crankcase Pressure short to ground | (1) | 101-04 | "Analog Sensor (Active)" |
| 110-3 Engine Coolant Temperature open/short to +batt | 27 | 110-03 | "Analog Sensor (Active)" |
| 110-4 Engine Coolant Temperature short to ground | 27 | 110-04 | "Analog Sensor (Active)" |
| 168-0 System Voltage Low | 51 | 168-00 | "Electrical Power Supply" |
| 168-1 System Voltage Low | 51 | 168-01 | "Electrical Power Supply" |
| 168-2 Battery Voltage intermittent/erratic | 51 | 168-02 | "Electrical Power Supply" |
| 190-8 Engine Speed signal abnormal | 34 | 190-08 | "Engine Speed/Timing Sensor" |
| 253-2 Personality Module mismatch | 52 | 253-02 | "System Configuration Parameters" |
| 254-12 Electronic Control Module Error | (1) | (2) | (3) |
| 261-13 Engine Timing calibration required | (1) | (2) | "Engine Speed/Timing Sensor - Calibrate" |
| 262-3 5 Volt Sensor DC Power Supply short to +batt | 21 | 620-03 | "Sensor Supply" |
| 262-4 5 Volt Sensor DC Power Supply short to ground | 21 | 620-04 | "Sensor Supply" |
| 263-3 Digital Sensor Supply short to +batt | 21 | 263-03 | "Sensor Supply" |
| 263-4 Digital Sensor Supply short to ground | 21 | 263-04 | "Sensor Supply" |
| 268-2 Check Programmable Parameters | 56 | 1111-02 | "System Configuration Parameters" |
| 273-3 Turbo Outlet Pressure open/short to +batt | (1) | (2) | "Analog Sensor (Active)" |
| 273-4 Turbo Outlet Pressure short to ground | (1) | (2) | "Analog Sensor (Active)" |
| 274-3 Atmospheric Pressure open/short to +batt | 26 | 108-03 | "Analog Sensor (Active)" |
| 274-4 Atmospheric Pressure short to ground | 26 | 108-03 | "Analog Sensor (Active)" |
| 275-3 Right Turbo Inlet Pressure open/short to +batt | 29 | 1176-03 | "Analog Sensor (Active)" |
| 275-4 Right Turbo Inlet Pressure short to ground | 29 | 1176-04 | "Analog Sensor (Active)" |
| 276-3 Left Turbo Inlet Pressure open/short to +batt | 39 | 1177-03 | "Analog Sensor (Active)" |
| 276-4 Left Turbo Inlet Pressure short to ground | 39 | 1177-04 | "Analog Sensor (Active)" |
| 279-3 Aftercooler Temperature open/short to +batt | (1) | (2) | "Analog Sensor (Active)" |
| 279-4 Aftercooler Temperature short to ground | (1) | (2) | "Analog Sensor (Active)" |
| 289-3 Unfiltered Fuel Pressure open/short to +batt | (1) | 94-03 | "Analog Sensor (Active)" |
| 289-4 Unfiltered Fuel Pressure short to ground | (1) | 94-04 | "Analog Sensor (Active)" |
| 336-2 Incorrect ECS Switch inputs | (1) | 723-08 | "Start/Run/Stop Switch" |
| 337-2 Incorrect Remote E-Stop Switch inputs | (1) | 723-08 | "Emergency Stop Switch" |
| 338-5 Pre-lube Relay open circuit | (1) | (1) | "Prelubrication System" |
| 338-6 Pre-lube Relay short to ground | (1) | (1) | "Prelubrication System" |
| 342-8 Secondary Engine Speed signal abnormal | 34 | 723-08 | "Engine Speed/Timing Sensor" |
| 444-5 Start Relay open circuit | (1) | (2) | "Starting Motor System" |
| 444-6 Start Relay short to ground | (1) | (2) | "Starting Motor System" |
| 446-5 Air Shutoff Relay open | (1) | (2) | "Air Shutoff System" |
| 446-6 Air Shutoff Relay short | (1) | (2) | "Air Shutoff System" |
| 542-3 Unfiltered Engine Oil Pressure open/short to +batt | 24 | 1208-03 | "Analog Sensor (Active)" |
| 542-4 Unfiltered Engine Oil Pressure short to ground | 24 | 1208-04 | "Analog Sensor (Active)" |
| 545-5 Ether Start Relay open/short to +batt | (1) | (2) | "Ether Injection System" |
| 545-6 Ether Start Relay short to ground | (1) | (2) | "Ether Injection System" |
| 827-8 Left Exhaust Temperature signal abnormal | (1) | (2) | "Pulse Width Modulated Sensor" |
| 828-8 Right Exhaust Temperature signal abnormal | (1) | (2) | "Pulse Width Modulated Sensor" |
| 1177-8 Fuel Position Multiplier Sensor noisy signal | (1) | (2) | "Fuel Position Multiplier" |
| 1495-2 Injector Trim Codes Not Programmed | (1) | 1495-02 | "System Configuration Parameters" |
| (1) | No flash codes are available at the present time. |
| (2) | No SPN-FMI codes are available at the present time. |
| (3) | The Electronic Control Module (ECM) has detected a fatal internal error. Replace the ECM. Refer to Troubleshooting, "Replacing the ECM". |
Diagnostic codes alert the operator that a problem in the electronic system has been detected. Diagnostic codes also indicate the nature of the problem to the service technician. The Caterpillar Electronic Technician (ET) is a software program that is designed to run on a personal computer. Diagnostic codes may be viewed on a personal computer that has Cat ET software. Diagnostic codes consist of the Module Identifier (MID), the Component Identifier (CID), and the Failure Mode Identifier (FMI).
Module Identifier (MID) - The MID is a three digit code that identifies the ECM (module) that generated the diagnostic code. For example, the number 36 identifies the engine's ECM for this MID.
Component Identifier (CID) - The CID is a number with three or four digits. The CID indicates the component that generated the code. For example, the CID number 1 identifies the fuel injector for the number one cylinder.
Failure Mode Identifier (FMI) - The FMI is a two digit code that indicates the type of failure. Refer to Table 2 for a complete list of the two digit codes. Refer to Table 2 for a description of the failure.
| FMI | Failure |
|---|---|
| 00 | Data is above the normal range. |
| 01 | Data is below the normal range. |
| 02 | Incorrect signal |
| 03 | Voltage is above the normal range. |
| 04 | Voltage is below the normal range. |
| 05 | Current is below the normal range. |
| 06 | Current is above the normal range. |
| 08 | Abnormal signal |
| 09 | Abnormal update |
| 12 | A device or a component failed. |
| 13 | A component is out of calibration. |
Refer to Table 1 for a complete list of the diagnostic codes and the appropriate troubleshooting procedure.
Do not confuse diagnostic codes with event codes. Event codes alert the operator that an abnormal operating condition such as low oil pressure or high coolant temperature has been detected. If an event code is active, refer to Troubleshooting, "Event Code List".
| |
| Illustration 1 | g01117578 |
|
Output voltage from a typical analog temperature sensor | |
Illustration 1 indicates the signal range for a typical analog sensor. Diagnostic codes will be generated if the sensor's output signal is below 0.2 VDC or above 4.8 VDC.
Note: This graphic is an example. The ranges in this graphic are examples.
An active diagnostic code represents a problem with the electronic control system. Correct the problem as soon as possible.
When the engine's ECM generates an active diagnostic code, the "Active Alarm" indicator ("Engine Control Alarm Status" on Cat ET) is activated in order to alert the operator. If the condition that generated the code is momentary, the message disappears from the list of active diagnostic codes. The diagnostic code becomes logged.
When the ECM generates a diagnostic code, the ECM logs the code in permanent memory. The ECM has an internal diagnostic clock. Each ECM will record the following information when a code is generated:
- The hour of the first occurrence of the code
- The hour of the last occurrence of the code
- The number of occurrences of the code
This information is a valuable indicator for troubleshooting intermittent problems.
A code is cleared from memory when one of the following conditions occur:
- The service technician manually clears the code.
- The code does not recur for 100 hours.
- A new code is logged and there are already ten codes in memory. In this case, the oldest code is cleared.
Some diagnostic codes may be easily triggered. Some diagnostic codes may log occurrences that did not result in complaints. The most likely cause of an intermittent problem is a faulty connection or damaged wiring. The next likely cause is a component failure. The least likely cause is the failure of an ECM. Diagnostic codes that are logged repeatedly may indicate a problem that needs special investigation.
Note: Always clear logged diagnostic codes after investigating and correcting the problem which generated the code.