COGENG E311982 Pressure Sensor Volvo MC60C MC70C MC110C

Product Parameter Table

PRODUCT OVERVIEW

The COGENG Hydraulic Pressure Sensor, primary part number E311982 and cross-referenced with associated part number VOE16213230, is a precision-manufactured, solid-state piezoresistive pressure transducer engineered as a direct, form-fit-function replacement for the Volvo MC Series compact hydraulic excavator platform. This critical electronic sensor is deployed across the complete family of Volvo compact excavators, including the MC60C, MC70C, MC105C, MC110C, MCT145C, and MCT95C models. The E311982 pressure sensor serves as the essential sensory element within the machine's advanced hydraulic control system, continuously monitoring real-time hydraulic system pressure and providing the precise, high-speed electrical feedback signal that the machine's Pump Control Module (PCM) or main Vehicle Electronic Control Unit (VECU) requires to manage and optimize the excavator's hydraulic pump displacement, implement power delivery, and overall machine performance.

In a modern Volvo compact excavator, the hydraulic system is an intricate network of high-pressure components operating at pressures that can exceed 250 bar (3,625 psi) during heavy digging, lifting, or breaker operation. The E311982 pressure sensor is typically installed directly into the main hydraulic pump's discharge port, the main control valve inlet gallery, or specific implement circuit lines. From this position, it directly senses the hydraulic oil pressure through a thin, meticulously engineered stainless steel diaphragm. Beneath this diaphragm, a silicon piezoresistive sensing element—micro-machined using semiconductor fabrication techniques—converts the mechanical stress of the hydraulic pressure into a precise, proportional change in electrical resistance. This resistance change is processed by an integrated Application-Specific Integrated Circuit (ASIC) signal conditioner, which compensates for temperature variations, linearizes the output, and produces a clean, low-noise, 0.5V to 4.5V ratiometric analog voltage signal. This signal, transmitted through the sensor's sealed 3-pin Deutsch connector to the machine's PCM or VECU, represents the instantaneous hydraulic system pressure with an accuracy of ±0.5% of full scale and a response time of less than one millisecond. The control module uses this real-time pressure data to make continuous, split-second decisions: modulating the electro-proportional pump displacement solenoids to match pump flow to demand, adjusting engine throttle position to optimize fuel efficiency, detecting potential system overload conditions to protect structural components, and providing diagnostic pressure data for troubleshooting and preventive maintenance.

The operating environment for a pressure sensor mounted directly on a compact excavator's hydraulic pump or control valve is exceptionally severe. The sensor body is subjected to continuous, high-amplitude, high-frequency vibration transmitted directly from the hydraulic pump and engine. The hydraulic oil temperature can fluctuate dramatically, from cold-start ambient conditions as low as -30°C in winter operations to sustained operating temperatures exceeding 100°C during heavy summer work, causing rapid thermal expansion and contraction cycles that stress the sensor's internal welds and seals. The sensor is exposed to hydraulic pressure spikes and pulsations—rapid, high-amplitude pressure transients generated by pump ripple, valve spool shifting, cylinder cavitation, and the sudden pressure surges that occur when an implement cylinder reaches the end of its stroke or when a breaker attachment cycles. These pressure spikes can momentarily exceed the sensor's rated pressure range, subjecting the internal components to mechanical fatigue. The external environment includes direct exposure to high-pressure water jetting during machine cleaning, diesel fuel and hydraulic oil spray, corrosive de-icing salts in winter roadwork applications, and the constant abrasive assault of dust, sand, and mud.

The OEM E311982 / VOE16213230 pressure sensor, despite its robust design, is a known service item with predictable failure modes. The most common failure is sensor output drift, where the zero-pressure offset voltage or the full-scale span gradually shifts over time due to fatigue of the silicon sensing element or degradation of the ASIC compensation circuit. This causes the PCM to receive an incorrect pressure signal, potentially resulting in reduced hydraulic performance, sluggish implement response, or erroneous diagnostic trouble codes. A second failure mode is complete signal loss, often caused by a fatigue fracture in the internal wire bonds connecting the sensing element to the ASIC, corrosion of the connector terminals due to moisture ingress past a degraded seal, or physical damage to the sensor housing from impact. A third failure is leakage at the pressure port, where the Viton O-ring face seal hardens and shrinks due to thermal aging, allowing hydraulic oil to seep past the threads. COGENG's E311982 aftermarket pressure sensor is engineered to definitively resolve these failure mechanisms. We utilize a fully welded, hermetically sealed 17-4 PH stainless steel housing that provides superior corrosion resistance, fatigue strength, and long-term dimensional stability. The sensing element is fabricated using advanced bulk micromachining techniques for exceptional linearity and long-term drift stability. The internal ASIC signal conditioner incorporates advanced temperature compensation algorithms and EMI/RFI filtering for clean, noise-free output. Every sensor undergoes a complete, multi-point pressure calibration cycle against a NIST-traceable reference standard, a helium leak test to verify hermetic seal integrity, and a full functional output verification across its entire compensated temperature range before shipment.

COMPATIBLE VOLVO COMPACT EXCAVATORS

The E311982 pressure sensor is validated for the following Volvo MC Series compact excavator models. Always provide your complete machine model and serial number for final compatibility verification.

PARTS LIST (Included in Package)

1. E311982 Hydraulic Pressure Sensor (1 unit): The complete sensor assembly, including the 17-4 PH stainless steel body, integrated Deutsch DT 3-pin connector, pre-installed Viton O-ring face seal, and protective dust cap on the connector interface.

2. Pre-Installed Viton O-Ring Face Seal: The M12 x 1.5 thread port is fitted with a new, OEM-specification Viton fluoroelastomer O-ring for immediate, leak-free installation.

3. Protective Connector Dust Cap: A plastic cap installed on the electrical connector to prevent contamination during handling and storage. Remove before installation.

4. Anti-Static ESD Shielding Bag with Desiccant: The sensor is sealed in a silver ESD protective bag with a silica gel desiccant packet to prevent moisture absorption during transit and storage.

5. Heavy-Duty Export Carton with Protective Foam Insert: The bagged sensor is packed in a rigid, double-wall corrugated carton with a custom-cut high-density foam insert that immobilizes the sensor and protects the connector and threads from impact damage.

The Relationship: VOE16213230, E311982, and MBS 1250

Here's the simplified relationship:

DECOMPOSE PICTURES (VISUAL REFERENCE GUIDE)

Note: The following descriptions provide a detailed technical walkthrough of accompanying high-resolution product photographs.

Image 1: Complete Sensor Assembly — Isometric View
A high-resolution studio photograph of the E311982 pressure sensor shown from a three-quarter isometric angle. The image clearly displays the sensor's three main sections: the threaded pressure port at the base with the visible Viton O-ring, the hexagonal wrench flats for installation torque, the cylindrical 17-4 PH stainless steel main body with laser-etched part number markings, and the integral Deutsch DT 3-pin female connector at the top with the protective dust cap installed.

Image 2: Pressure Port & O-Ring Seal — Macro Detail
A close-up macro photograph focusing on the M12 x 1.5 threaded pressure port. The image shows the clean, precision-cut threads in sharp detail. The pre-installed black Viton fluoroelastomer O-ring is clearly visible seated in its machined groove at the base of the thread, ready to form a leak-free face seal against the mating hydraulic port.

Image 3: Electrical Connector Interface — Pin Configuration
A head-on view of the Deutsch DT 3-pin connector with the protective cap removed. The three gold-plated female terminals are visible within the sealed connector body. The image includes a pin-out diagram overlay showing the standard terminal assignments: Pin A (Ground), Pin B (Signal Output 0.5-4.5V), Pin C (5V DC Supply).

Image 4: Laser-Etched Identification Markings
A close-up image of the sensor body showing the permanent, laser-etched identification markings. The part number E311982, the cross-reference VOE16213230, the pressure range, the output signal specification, the serial number, and the COGENG logo are clearly legible on the stainless steel surface.

Image 5: Hermetic Weld Detail
A macro photograph of the circumferential weld seam that joins the pressure port base to the main sensor body. The image shows a smooth, uniform, fully penetrated laser weld with no porosity, cracks, or discoloration—visual evidence of the hermetic seal that protects the internal sensing element from moisture and contamination.

COMPATIBILITY NOTES: CRITICAL VERIFICATION GUIDE

1. E311982 and VOE16213230 — Interchangeable Part Numbers: These two part numbers refer to the same hydraulic pressure sensor. E311982 is typically the Volvo Parts system reference number, while VOE16213230 is the Volvo Original Equipment ordering code. Both numbers reference the identical component and are completely interchangeable.

2. MC Series Compact Excavator Specificity: This sensor is specifically designed for the Volvo MC Series compact excavator platform, including the MC60C, MC70C, MC105C, MC110C, MCT145C, and MCT95C models. It is not compatible with earlier generation machines (e.g., EC series full-size excavators) or different Volvo equipment lines (e.g., wheel loaders, articulated haulers) without explicit physical and electrical specification verification.

3. Installation Location: The E311982 sensor is typically installed in the main hydraulic pump discharge circuit, the control valve inlet manifold, or specific implement pressure sensing ports. Before replacing the sensor, verify that the hydraulic system is completely depressurized. Incorrect installation torque or a damaged O-ring seal will cause hydraulic oil leakage.

4. Electrical Connector Compatibility: The sensor features an integral Deutsch DT 3-pin female connector. Ensure that your machine's wiring harness mating connector is a compatible Deutsch DT 3-pin male plug. Do not attempt to force an incompatible connector, as this will damage the terminals.

5. Professional Installation Recommended: While sensor replacement is a straightforward procedure, it involves the high-pressure hydraulic system. Installation should be performed by a qualified technician who will properly depressurize the system, replace the O-ring seal, torque the sensor to specification, and verify leak-free operation and correct output signal using diagnostic software before returning the machine to service.

INSTALLATION PROCEDURE

Note: This is a step-by-step procedural guide for correct sensor installation.

Step 1: Safety Preparation — System Depressurization
Park the excavator on level ground. Lower all attachments to the ground. Stop the engine. Turn the key switch to the OFF position and remove the key. Operate all hydraulic control levers repeatedly in all directions to release any stored pressure in the implement circuits. Open the hydraulic tank filler cap slowly to release any tank pressure, then retighten. The hydraulic system must be completely depressurized before removing the old sensor.

Step 2: Old Sensor Removal
Locate the failed E311982 sensor on the hydraulic pump, control valve, or sensing port. Clean the area thoroughly around the sensor to prevent dirt from entering the hydraulic system when the sensor is removed. Disconnect the wiring harness Deutsch connector by pressing the release tab and pulling straight out. Do not pull on the wires. Using a suitable wrench on the sensor's hex flats, unscrew the old sensor counter-clockwise. Have a clean rag ready to catch any residual hydraulic oil.

Step 3: Inspection and Preparation
Inspect the hydraulic port threads and sealing surface for any damage, debris, or remnants of the old O-ring. Clean the sealing surface with a lint-free cloth. Verify that the new COGENG E311982 sensor has the pre-installed Viton O-ring seated correctly in its groove. Do not use thread sealant or PTFE tape—the O-ring provides the seal.

Step 4: New Sensor Installation
Carefully thread the new sensor into the port by hand to avoid cross-threading. Once hand-tight, use a torque wrench on the hex flats to tighten the sensor to the OEM-specified torque (typically 20-25 Nm for M12 x 1.5 pressure ports). Do not overtighten, as this can damage the O-ring or the sensor body. Connect the wiring harness Deutsch connector to the sensor, ensuring an audible click as the connector latch engages.

Step 5: System Verification and Leak Check
Start the engine and allow it to idle. Check the sensor installation point for any hydraulic oil leakage. If leakage is observed, stop the engine, depressurize the system, and verify O-ring condition and torque. Using Volvo diagnostic software (VCADS Pro or Tech Tool), verify that the sensor output signal is reading correctly and within the expected range. Cycle all hydraulic functions through their full range and recheck for leaks and correct signal output. Confirm no active diagnostic trouble codes before releasing the machine to service.

🚚 SHIPPING DETAILS & RETURN POLICY

Shipping Details

Return Policy

FREQUENTLY ASKED QUESTIONS

Q1: What symptoms indicate a failed E311982 pressure sensor?
A: Common symptoms include: sluggish or jerky hydraulic response, reduced digging power or lifting capacity, the excavator entering a "limp mode" with reduced hydraulic performance, diagnostic trouble codes related to "Pump Pressure Sensor — Signal Out of Range" or "Pressure Sensor — Voltage Too High/Low," and visible hydraulic oil leakage from the sensor base indicating a failed O-ring seal.

Q2: Can I test the sensor before replacing it?
A: Yes. Using a multimeter, you can check the sensor output voltage with the key ON and engine OFF (should read approximately 0.5V, representing zero pressure). With the engine running and hydraulic functions at rest, the voltage should correspond to system standby pressure. A stuck, erratic, or out-of-range voltage suggests a failed sensor. A diagnostic scan tool provides the most definitive diagnosis.

Q3: Is this the same sensor as the Volvo VOE16213230?
A: Yes. E311982 and VOE16213230 are the same component. The E311982 is the Volvo parts system number, and VOE16213230 is the Volvo Original Equipment ordering code. They are completely interchangeable.

Q4: Does this sensor come with the O-ring seal?
A: Yes. Every COGENG E311982 pressure sensor is supplied with a new, OEM-specification Viton O-ring face seal pre-installed on the pressure port threads, ready for immediate installation.

Q5: What is the correct installation torque for this sensor?
A: The recommended installation torque for an M12 x 1.5 pressure port with a Viton O-ring face seal is typically 20-25 Nm. Always use a calibrated torque wrench. Under-torquing can cause leakage; over-torquing can damage the O-ring, the threads, or the sensor body. Refer to your machine's service manual for the exact torque specification.

📞 CONTACT & ORDERING

For pricing, machine-down emergency support, trial order arrangements, bulk quantity discount structures, or pre-purchase compatibility verification, contact your COGENG supplier today.

Sales Price: Contact COGENG sales customer service directly for the most current competitive pricing. Trial orders are welcome. Request a personalized quotation.
Shipping Method & Cost: We will provide a tailored shipping quotation—by air, by sea, or by express courier—based on your location, urgency, and budget. DDP shipping terms available for select countries.
Estimated Delivery Time: Based on the selected carrier's service standards. Tracking number provided within one business day of dispatch.

✅ Direct OEM Replacement — Precision-Calibrated for Guaranteed Plug-and-Play Performance.
✅ Volvo MC Series Compatible — Validated for MC60C, MC70C, MC105C, MC110C, MCT145C, MCT95C.
✅ Severe-Duty Construction — 17-4 PH Stainless Steel, Fully Welded Hermetic Seal, Viton O-Ring.
✅ ISO 9001 Certified — NIST-Traceable Calibration, 100% Function Tested Before Shipment.
✅ Trial Orders Welcome — Single Unit Orders Accepted for First-Time Customer Evaluation.
✅ In Stock & Ready to Ship — Minimize Your Compact Excavator Downtime with Immediate Worldwide Dispatch.

Critical Action Required: To ensure 100% part number accuracy, please provide your Volvo excavator's complete model designation and serial number. Our technical team will verify compatibility and provide written confirmation before your order is processed.
Merchant Return Policy: All products shipped are not returnable or exchangeable. Please complete all compatibility checks before purchase.