E311982 High Pressure Sensor 400Bar – Fits Liugong Excavators & Construction Machinery, 4-Pin Connector

E311982 High Pressure Sensor – 400Bar, 4-Pin, for Liugong Excavator Hydraulic Systems

This E311982 pressure sensor is engineered specifically for Liugong excavators and construction equipment, monitoring hydraulic system pressure up to 400 Bar. It delivers accurate real‑time pressure signals to the machine’s control unit (ECU/VCU), ensuring safe and efficient operation under heavy loads – from trenching to rock breaking.

Key Specifications:

• Part Number: E311982

• Pressure Range: 0 – 400 Bar

• Connector: 4‑pin electrical connector (4‑wire)

• Compatible Brands: Liugong excavators and related construction machinery

• Function: Hydraulic main pump / system pressure monitoring

• Signal Type: Analog voltage or current (verify against original)

Why Choose This Sensor:

• Manufactured with high‑quality sensing elements and a reinforced housing – resists hydraulic oil, pressure shocks, vibration, and extreme temperature swings.

• The 4‑pin connector ensures a secure electrical connection and stable signal output, minimizing data loss or system errors.

• Built to OEM specifications – ensures exact fitment and plug‑and‑play electrical compatibility, eliminating the need for harness modifications.

Common Failure Symptoms:

• Diagnostic trouble codes related to pressure sensor (e.g., code 298 on Liugong displays)

• Erratic or sluggish hydraulic implement response

• Unstable or drifting pressure readings on the monitor

• Engine derating or reduced power under load

⚠️ Fitment Note:
Confirm that your original sensor carries part number E311982 and uses a 4‑pin connector (not 3‑pin or other variants). Verify the pressure range (400Bar) matches your machine’s specification. Professional installation recommended – incorrect wiring may damage the sensor or ECU.