260-2180 Cat High-Pressure Sensor Assembly (Sensor GP-Pressure) is primarily utilized for high-pressure monitoring of the main hydraulic pump; in certain models, it also serves to monitor high pressure within the common rail fuel system. It functions as a critical feedback component within electronically controlled hydraulic and fuel systems. I. Core Parameters and Specifications

Part Number: 260-2180 (2602180)

Official Name: High Pressure Sensor / Sensor GP-Pressure (High Pressure Sensor Assembly)

Type: Piezoresistive High Pressure Sensor (Analog Output)

Primary Application:

Hydraulics: Monitors Main Pump / Pilot High Pressure (0–600 bar / 0–8700 psi)

Fuel: Used for Common Rail High Pressure on select models (Compatible with C9/C13/C15/C18, etc.)

Electrical: 3-pin waterproof connector; 5V power supply; 0.5–4.5V linear analog output signal; Operating voltage 9–32V

Mechanical: Threaded mount (M12×1.5 or 7/8-14 UNF); IP67 protection rating; Operating temperature -40°C to 125°C

Measurement Range: 0–600 bar (0–8700 psi) (Universal high-pressure range for hydraulics/fuel)

Replacement Models: 224-4535, 224-4536, 312-5888 (Interchangeable in certain scenarios)

II. Compatible Models (Mainstream)

Excavators (Primarily Hydraulic Systems)

311D, 312D, 313D2, 314D, 318D, 320D, 323D, 329D, 330D, 336D, 345D, 349D, 374D, 390D

Engines (Fuel Common Rail)

C4.2, C4.4, C9, C13, C15, C18

Other Equipment

Wheel Loaders, Motor Graders, Articulated Trucks, Generator Sets (High-pressure hydraulic / fuel systems)

III. Failure Symptoms and Diagnosis

Typical Symptoms

Hydraulics: Weak operation, engine stalling/bogging down under load, speed drop; abnormal pilot pressure, jerky operation/control lag Fuel System: Difficulty starting, lack of acceleration power, excessive black smoke, common rail pressure alarm

General: Sensor warning light illuminated, ECM reports pressure-related fault codes

Common Fault Codes (CAT)

P0191/P0192/P0193: Fuel pressure sensor circuit fault

Hydraulic System Codes: Main pump pressure sensor circuit / performance anomaly

Quick Diagnostics

Verify proper 5V power supply and ground connections

Measure output voltage at idle, under no-load, and under heavy-load conditions (voltage should vary linearly with pressure)

Check for loose connectors, corrosion, water ingress, and proper sealing of the sensor installation

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