Specification  

The FRP sensor (common rail press sensor) is installed directly on engine fuel rail (common rail), where it detects the fuel pressure inside the rail and converts it into an electrical signal for the ECM. It is mounted on the fuel common rail, between cylinders 3 and 4. The sensor area as the left upper rear of the engine, next to the EGR valve. The engine sensor is applied exclusively in the DENSO common rail fuel injection system of Isuzu engine used in excavator, heavy trucks, and commercial vehicles. Its application domain is the high-pressure fuel circuit — it is a fuel-system pressure feedback sensor, not a machine hydraulic or instrumentation sensor. It operates in the high-pressure, fuel-wetted environment of the common rail and must withstandcontinuous pressure cycling and diesel exposure.

Maintenance

The monitor showed FRP sensor signal circuits and sets faults when the signal or the resulting rail pressure is implausible.

• P0087 Fuel Rail Pressure Too Low ECM detects rail pressure below the commanded value (e.g., > 175 MPa below target in some Isuzu applications); can indicate a faulty sensor, fuel leak, or supply pump issue
• P0088 Fuel Rail Pressure Too High ECM detects rail pressure momentarily exceeding 208 MPa (some calibrations: 180 MPa); can result from a biased sensor signal or a stuck pressure control valve
• P0192 FRP Sensor Signal Circuit Low Short to ground or open; sensor output voltage ≤ 0.55 V for a defined duration
• P0193 FRP Sensor Signal Circuit High Short to voltage; sensor output voltage ≥ 4.9 V for a defined duration
• P0191 FRP Sensor Performance / Out of Range Sensor signal does not correlate with expected pressure; sensor itself may be faulty or biased

About XCM-PARTS

Xiamen Sincerity Machinery Co., Ltd. is CASE authorized dealer in China, we specialize in full range of genuine Case Sumitomo and Linkbelt Excavator parts, products main include monitor, controller, pressure sensor, wiring harness, hydraulic pump, hydraulic swing motor, hydraulic travel motor, final drive, gearbox reduction, hydraulic repair kits, engine injector, engine turbocharger, engine gasket kit, engine liner kit, engine water pump, engine oil pump, engine overhaul gasket set, etc. which fit to SUMITOMO excavators, CNH excavators, Link-belt excavators.

Over the years, we have actively participated in China’s premier construction machinery exhibitions. These shows serve as vital platforms where we connect with the global engineering community, showcase our premium excavator parts, and stay ahead of market trends. Our consistent presence at these exhibitions has been instrumental in expanding our footprint across high-growth markets. Today, we proudly serve customers in South America, North America, the Middle East, and Russia—regions where our full range of parts and responsive service have earned growing trust and repeat business Whether you are a new contact exploring collaboration or an existing partner seeking continued support, we welcome the opportunity to meet face-to-face at our next show. Let’s build a stronger future together—one project, one part, one partnership at a time.

Why Choose Us

XCM-PARTS company work at excavator after-sales market over 20 years, customer satisfaction is the foundation of our business. We are dedicated to delivering high-quality products, professional support, and timely service that meet and exceed customer expectations. We actively listen to customer feedback, respond quickly to their needs, and continuously improve our products and processes. By building trust and creating lasting value, we strive to establish long-term partnerships with every customer.

FAQ

Does it genuine parts?

Yes, It is genuine Sumitomo sensor.

What brand of Excavator fit to?

It fit to Case Sumitomo and Link-belt excavator.

How can I order it?

I will send invoice with payment information via email.

How do payment?

We accept to T/T, PayPal, Credit Card, Western Union transfer.

What's the delivery time?

Stock products estimated 3-7 days.

Do you have photo for the products?

Yes, we will send you photo before shipping.

Can you offer warranty for your products?

Yes, we offer 1-3 months warranty.

Can i have a sample?

Yes, we offer sample for bulk order.