PLATE-THRUST 1502392 - Caterpillar

Use this procedure in order to troubleshoot high engine oil pressure or use this procedure if any of the following event codes are active or logged.
Table 1
Event Code
Description Conditions which Activate the Code System Response
E125 (1) Engine Oil Pressure High Warning The engine oil pressure is greater than the trip point and the delay time has expired. The alarm output is activated. The code is logged.
E126 (3) Engine Oil Pressure High Shutdown The shutdown output is activated. The code is logged. The engine is shut down. Probable Causes
An oil line or an oil passage is restricted.
Faulty oil pressure relief valveRecommended Repairs
Blocked Oil Passage or Oil Line
Use various pressure taps in order to determine if an oil passage or oil line is restricted.Faulty Oil Pressure Relief Valve
Inspect the oil pressure relief valve. Replace parts, if necessary.