Caterpillar Fault Code
Free · no signup600-4
Hydraulic Temp Gauge High
System
Hydraulic
Symptom
Hydraulic Temp Gauge High
Diagnosis & fix steps
LOGIC: Hydraulic Oil Temp Sensor Voltage High (Open).
ACTION: Check for a broken wire at the sensor near the main return filter.
Red Seal field insights
CAT 336: Sensor is a passive resistive type. High voltage = infinite resistance (broken wire).
Track this across your whole fleet
This code is free to read. AM Fleet Integrity lets your team log fault codes against assets, plus the full fault-code library, QR operator reporting, PM scheduling and predictive alerts. Start free — no credit card required.
Start your free trial