CAP GP-TRACK IDLER 9W4477 - Caterpillar

Table 1
Diagnostic Trouble Code for Engine Overspeed    
J1939 Code    Description    Information About the Code    
190-15     Engine Overspeed Warning - Level 1     The engine has exceeded the value that is programmed into the 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 Electronic Control Module (ECM) limits the flow of fuel in order to prevent the engine speed from exceeding 3000 rpm. When the engine speed has dropped to less than 2800 rpm, the 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 engineFactory passwords are required in order to clear the codes. No troubleshooting is required.The history of engine overspeeds can be viewed on the electronic service tool.