1, CDL Code: E361(1) Code Description: Engine Coolant Temperature: High - Lowest Severity Level.
2, E361(2) Engine Coolant Temperature: High - Medium Severity Level
3, E361(3) Engine Coolant Temperature: High - Highest Severity Level Recommended Actions
Note: The steps are listed below in order of probability. Perform these steps in sequence.
Possible Causes
• Diagnostic Codes
• Coolant Level
• Coolant Temperature Sensor
• Radiator and Hose
• Radiator Cap and Safety Valve
• Water Temperature Regulator
• Engine Cooling Fan
• Coolant Quality
• Coolant Pump
• NRS Cooler
• Cylinder Head Gasket
Caterpillar ET 2026A & 2019C Electronic Technician Diagnostic Software Download and Installation
Use this step to troubleshoot a high coolant temperature fault, or if any of the following event codes are currently active.
12.2021 Caterpillar ECM ECU Flash Files Full Set Download
CAT Comm Adapter3 478-0235 Diagnostics for Caterpillar
