20706889 Sensor | Genuine Volvo Penta Part

🔧 Product Description

A genuine combined pressure and temperature sensor used by compatible Volvo Penta D9 and D12 engine-management systems. It measures charge-air or boost pressure together with intake-air temperature and sends both values to the control unit.

🚤 Compatibility

Typically suits:

• Volvo Penta TWD1240VE
• Volvo Penta TAD943VE
• Volvo Penta TAD952VE
• Volvo Penta TAD951VE
• Volvo Penta TAD950VE
• Volvo Penta TAD1241GE
• Volvo Penta TAD1242GE
• Volvo Penta TAD1240GE
• Volvo Penta TAD1241VE
• Volvo Penta TAD1242VE
• Volvo Penta TAD1241-42VE
• Volvo Penta TAD940GE
• Volvo Penta TAD940VE
• Volvo Penta TAD941VE
• Volvo Penta TAD941GE
• Volvo Penta TAD942VE

• Engine Family: TWD, TAD

⚙️ Key Features

• Combined boost-pressure and charge-air-temperature measurement
• Cross-referenced to Volvo numbers 20700060, 20552759, 20478260, 3985650, 20374280 and 3172522
• Matched sensing range and connector for D9/D12 EDC systems
• Supports fuelling, boost control, smoke limitation and engine protection
• Correct diagnosis requires supply, ground, signal and harness checks
• Do not substitute a pressure-only sensor with the same connector

🔌 Function

Measures intake/boost pressure and charge-air temperature for engine-control calculations and protection functions.

⚠️ Common Signs of Failure

• Boost or intake-temperature readings are implausible or fixed
• The engine derates or stores pressure/temperature faults
• Power and smoke control become inconsistent
• The signal drops out with vibration or connector movement
• Testing shows an open circuit, short circuit or out-of-range output

🛠️ Service Notes

• Note how the sensor sits and how its lead is routed before removing it, and support the harness so refitting does not leave the cable strained or rubbing
• Turn the sensor with a spanner on its hex only — never lever or twist it by the connector body or the wiring, which breaks the internal joint even when the sensor looks undamaged
• Renew the O-ring or sealing washer where one is fitted, and do not add thread sealant unless the manual for your engine specifies it; sealant on the threads can break the earth path of a sensor that earths through its body
• Tighten to the figure in the workshop manual for your engine — overtightening distorts the housing and shifts or destroys the sensing element
• Make sure the connector is clean, dry and fully latched home and check the pins for corrosion and spread — a poor connector accounts for a great many faults blamed on the sensor — then run the engine and confirm the reading or warning lamp behaves sensibly before returning the boat to service

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 20706889 → Supersedes 20478260 → Supersedes 20374280

OEM / Related Numbers

• 20478260 earlier number superseded by this part
• 20374280 earlier number superseded by this part
• 20700060 - Related Volvo sensor references
• 20552759 - Related Volvo sensor references
• 3985650 - Additional Volvo cross-references
• 3172522 - Additional Volvo cross-references

Aftermarket / Verified Equivalents

• Advance Truck Parts: ATP 20700060 / 20706889 replacement sensor
• DT Spare Parts: 2.27172
• Auger: 74466
• Cojali: 2260221
• febi Bilstein: 109336
• Herth+Buss Elparts: 70670871
• PE Automotive: 080.945-00A
• Sampa: 032.371
• ST-TEMPLIN: 01.050.8716.610
• Trucktec Automotive: 03.17.021
• Air Fren: 25.2900.01
• OSSCA: 47493
• Casals: 65260
• Meat & Doria: 825038
• SIDAT: 84.3181
• FISPA: 84.3181
• STELLOX: 88-21805-SX
• Hoffer: 74725038

📦 Condition

• Genuine Volvo Penta part
• Brand new
• Supplied in original or equivalent packaging