PLUG 3K8460 - Caterpillar

Use this procedure in order to troubleshoot a high crankcase pressure or use this procedure if one of the following event codes is active. Refer to Troubleshooting, "Event Code List" for information about event codes and the default trip points for these codes.
Table 1
Event Code    
Code and Description    Conditions which Generate this Code    System Response    
E012(2) High Crankcase Pressure Derate     Engine crankcase pressure is above trip point pressure for the delay time.     The code is logged.    
E013(3) High Crankcase Pressure Shutdown     The code is logged. The engine will shut down.
E101(1) High Crankcase Pressure Warning     The code is logged.
E101(2) High Crankcase Pressure Derate     The engine will be derated. The code is logged.
E101(3) High Crankcase Pressure Shutdown     The engine will shut down. The code is logged. Probable Causes
Worn engine components
Plugged crankcase breatherRecommended Actions
Engine Components
Damaged pistons or rings can cause too much pressure in the crankcase. This condition will cause the engine to run rough. There will be more than the normal amount of fumes (blowby) rising from the crankcase breather. The breather can then become restricted in a short time, causing oil leakage at gaskets and seals that would not normally have leakage. Blowby can also be caused by worn valve guides or by a failed turbocharger seal.Crankcase Breather
A plugged crankcase breather will cause excessive crankcase pressure. Leakage of the crankshaft seal can occur. Sealing of the piston rings can be lost and will enable crankcase blowby to increase the crankcase pressure further.The 8T-2700 Blowby/Air Flow Indicator is used to check the amount of blowby. Refer to Special Instruction, SEHS8712, "Using the 8T-2700 Blowby/Air Flow Indicator " for the test procedure for checking the blowby.