PULLEY 2170384 - Caterpillar

Table 1
J1939 Code and Description CDL Code and Description Comments
N/A E994 (2)
Low Crankcase Pressure The Engine Control Module (ECM) activates this code when the crankcase pressure has been below the minimum value for a programmed time period. The amber warning lamp is illuminated. The code is logged. Engine power is derated. Probable Causes
The oil fill cap is off.
The oil level gauge (dipstick) is not fully seated.
The vent filter (if equipped) for the crankcase is not installed.
The tube between the breather and the breather canister (if equipped) is not connected.Recommended Actions
Table 2
Troubleshooting Test Steps Values Results
1. Engine Ventilation
A. Establish communication between Cat® Electronic Technician (ET) and the ECM . Refer to Troubleshooting, "Electronic Service Tools", if necessary.
B. Download the "Warranty Report" from the engine ECM before performing any troubleshooting or clearing diagnostic trouble codes.
C. Inspect the engine. Look for the conditions that are listed above.
Ventilation
Result: The probable cause was found.
Repair: Make the necessary repairs.
Reset all active codes and clear all logged codes. Use Cat ET to verify that the problem is resolved.
If this procedure did not correct the issue, contact your Cat dealer Technical Communicator (TC). For further assistance, your TC can confer with the Dealer Solution Network (DSN).