TURBOCHARGER GP 4789720 - Caterpillar

Table 1
Diagnostic Trouble Codes for Engine Overspeed
J1939 Code Description Notes
190-15 Engine Overspeed Warning - Level 1 The engine has exceeded the value that is programmed into the Electronic Control Module (ECM) for 0.6 seconds.
There are no diagnostic trouble codes for the speed/timing sensors.
The engine has been running for at least 3 seconds.
190-0 Engine Overspeed Warning - Level 3 The engine has exceeded the value that is programmed into the Electronic Control Module (ECM) for 0.6 seconds.
There are no diagnostic trouble codes for the speed/timing sensors.
The engine has been running for at least 3 seconds.
The engine may shut down. The ECM limits the flow of fuel in order to prevent the engine speed from exceeding the value that is programmed into the ECM. When the engine speed has dropped to less than the value that is programmed into the ECM, the 190-15 code will be reset.The following operating conditions can cause the engine speed to exceed this value:
On a mobile machine, an incorrect transmission gear is selected.
Use of an incorrect fuel
Combustible gases in the air inlet for the engineIf the engine speed exceeds the value that is programmed into the ECM, the ECM illuminates the warning lamp and a 190-15 code is logged. Factory passwords are required in order to clear the code. No troubleshooting is required.If the engine overspeed persists, the alert lamp illuminates, a 190-0 code is logged, and the engine may shut down. No troubleshooting is required.The history of engine overspeeds can be viewed on the electronic service tool.