VolvoElectrical Parts

20889280 — Temperature Sensor 20889280 20451990 For Volvo Truck Fh Vm Bus B11R B5Lh B7R B12B B12M B9L B9R

This temperature sensor monitors the coolant temperature within the engine's cooling system, providing critical data to the engine control unit (ECU). It is manufactured to precise specifications for accurate and consistent readings, unlike a worn sensor that can drift or fail entirely. Operators may observe inaccurate temperature gauge readings, the cooling fan not engaging properly, or the engine running hotter than normal.

Temperature Sensor 20889280 20451990 For Volvo Truck Fh Vm Bus B11R B5Lh B7R B12B B12M B9L B9R – Part No 20889280 – Volvo Spare Part
Part Specifications
BrandVolvo
CategoryElectrical Parts
ConditionAftermarket — OEM Specification
DispatchSame-day from Mumbai (before 3 PM IST)
GST InvoiceAvailable — all orders
Export DocsCommercial invoice, packing list, COO

Compatible Models

Always verify with serial number before ordering.

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Installation & Application Notes

Disconnect main battery before working on electrical components. Use dielectric grease on all connector pins. Check ground connections — most electrical faults trace to poor grounds. Test with multimeter before installing new parts.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypeEngine Coolant Temperature Sensor
MaterialBrass, Thermistor
ApplicationEngine Cooling System
Service LifeReplace every 3-5 years or as needed
CompatibilityVolvo 20451990
ConditionNew — OEM specification aftermarket

Failure Symptoms

An inaccurate engine temperature gauge, fluctuating between cold and hot unexpectedly, is the initial sign of a failing temperature sensor. If left unaddressed, the ECU may receive incorrect data, leading to inefficient engine operation, potential overheating, or the cooling fan not activating when needed. This can result in increased wear on engine components due to improper temperature management.

Installation Tip

Ensure the engine is completely cool before attempting to remove the old sensor to prevent burns or coolant loss. Use a dedicated sensor socket to avoid damaging the electrical connector or the sensor body.

Service Note

Check the condition of the radiator hoses and the water pump for any signs of wear or leaks when replacing the temperature sensor.