Excavator Engine 381-9064 Pressure Sensor Compatible with Construction Machinery

1. Product Overview & Wholesale Price Range

The 381-9064 Pressure Sensor collects engine pressure signal, feeding real-time pressure data to the engine ECU to adjust working status for construction machinery engine.

• Factory Wholesale Price: $9 – $48 USD (Direct manufacturer pricing — Save up to 50% vs regional dealer markups)
• Sensor Type: Engine Pressure Sensor
• MPN: 381-9064
• MOQ & Bulk Discount: 1 Unit (Tiered wholesale discounts available for repair shop & distributor batch orders)
• Lead Time: 1–3 business days (Large factory stock ready for immediate worldwide dispatch)
• Warranty: 12 Months full replacement warranty with signal output test guarantee

2. Application Worksite Checklist

Engineered with corrosion-resistant housing and sealed sensor core to withstand harsh engine compartment conditions:

• Pressure Monitoring: Provides accurate pressure signal to ECU for engine working condition adjustment.
• Heavy Earthmoving & Quarry Operations: Wear-resistant housing resists oil corrosion, dust and vibration under continuous heavy-load operation.
• Long-Hour Mining & Loading Work: Stable pressure reading prevents engine fault codes during multi-shift operation.
• Engine Protection Control: Reliable pressure signal helps ECU limit over-pressure and protect engine parts.

3. Pressure Sensor Troubleshooting & Diagnostic Guide

If your construction machinery engine is exhibiting sensor-related failure, consult the diagnostic guide below:

• Fault 1: No Pressure Reading on Dashboard
  Root Cause: Failed or intermittent pressure sensor — ECU receives no pressure signal.
  Solution: Replace with new 381-9064 pressure sensor and inspect wiring harness and connector pins.
• Fault 2: Engine Power Loss & Unstable Running
  Root Cause: Incorrect pressure signal makes ECU misjudge engine working status.
  Solution: Install new 381-9064 pressure sensor and check wiring connector.
• Fault 3: ECU Pressure Related Fault Code
  Root Cause: Open circuit, short circuit or corroded sensor connector.
  Solution: Replace 381-9064 pressure sensor and clean connector terminals; clear DTC with diagnostic scanner.
• Fault 4: Engine Hard To Start
  Root Cause: Missing pressure signal leads ECU to adjust fuel supply incorrectly during cranking.
  Solution: Replace the 381-9064 pressure sensor before pursuing expensive fuel system repairs.
• Fault 5: Oil Leakage at Sensor Thread
  Root Cause: Damaged thread or failed sealing washer on sensor.
  Solution: Replace sensor with new sealing washer; apply proper thread sealant during installation.

4. Hot Machinery Replacement Parts Recommendation

Explore our factory-direct replacement components compatible with major global excavator brands:

5. Frequently Asked Questions & Technical Support

Q1: How do I verify if 381-9064 pressure sensor fits my engine?
A: Check your original sensor shape, thread size and connector type. Send machine serial number to us for quick fitment check.

Q2: What is the working principle of this pressure sensor?
A: This pressure sensor detects fluid pressure, converting pressure value into electrical signals for the engine ECU.

Q3: What should I note during sensor installation?
A: Use a new sealing washer, apply suitable thread sealant, do not over-tighten the thread. Check signal connection after installation.

Q4: Does 381-9064 pressure sensor come with the sealing washer?
A: Yes, each sensor comes with matched sealing washer, ready for direct installation on the engine.