COVER GP-ACCESS 4744129 - Caterpillar

Table 1
Event Code    
Description    Conditions which Activate the Code    System Response    
E101(1) High Crankcase Pressure Warning     The engine is running and the crankcase pressure is greater than the setpoint.     The alarm output is activated. The code is logged.    
E013(3) High Crankcase Pressure Shutdown     The shutdown output is activated. The code is logged. Probable Causes
Plugged crankcase breather and/or piping
Problem with the crankcase ventilation system (if equipped)
Plugged port on the crankcase pressure sensor
Faulty sensor
Internal engine problemRecommended Actions
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. This will enable crankcase blowby to further increase the crankcase pressure.Clean the crankcase breather according to the Operation and Maintenance Manual, "Engine Crankcase Breather - Clean".Crankcase Ventilation System
Engines that use bio-gas may have a system for ventilation of the crankcase. A problem with the ventilation system can increase the crankcase pressure. Service the ventilation system according to the literature that is provided by the OEM of the system.Plugged Port
The crankcase pressure sensor has a port in order to allow the ambient pressure into the sensor. The port is enclosed under a cap. Remove the cap and inspect the port for obstructions. Clean the port, when possible. Otherwise, replace the sensor.Faulty Sensor
If you suspect that the crankcase pressure sensor is faulty, replace the sensor with a sensor that is known to be good.Internal Engine Problem
If the piston rings do not seal, blowby will increase the crankcase pressure and the problem will become worse. Performance will deteriorate. The engine will have poor combustion. Deposits will build up on the pistons, on the valves, and in the cylinder heads. Downward pumping of the pistons against the increased crankcase pressure will further reduce the performance.To determine whether the piston rings leak, measure the crankcase blowby. Refer to the Operation and Maintenance Manual, "Crankcase Blowby - Measure/Record".Sticking of the pistons will also increase the crankcase pressure. If the problem is not resolved, piston seizure will result.If a problem with a piston is suspected, do not operate the engine. Remove the crankshaft inspection covers in order to inspect the cylinder liner for scoring and for scuffing. Use the barring device to move the piston to the uppermost position. Replace the piston rings and the cylinder liner, if necessary.