How to diagnose and replace coolant temperature sensors on 2005 Volvo V50?

The coolant temperature sensor in the thermostat housing transmits engine temperature to the management system and gauge. Faults are logged as codes by the ECU which can be accessed through a diagnostic connector. To replace the sensor, drain the cooling system, disconnect wiring and take specific steps for different engine models. Reassemble, top up coolant, afterwards.

Genuine 2005 Volvo V50 Coolant Temperature Sensors

Coolant Temperature Sensor

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2005 Volvo V50 Coolant Temperature Sensor Part Number: 30650752
$75.19 MSRP: $97.09
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Product Specifications
- Other Name: Engine Coolant Temperature Sensor; Coolant Temperature Sensor, Temperature Sensor
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 30650752
- Warranty: This genuine part is guaranteed by Volvo's factory warranty.
Fits the following 2005 Volvo V50 Submodels:
- 2.4i, i, T5, T5 R-Design | 5 Cyl 2.4 L GAS, 5 Cyl 2.5 L GAS

2005 Volvo V50 Coolant Temperature Sensors Parts and Q&A

Q: How to diagnose and replace coolant temperature sensors on 2005 Volvo V50?
A: The coolant temperature sensor in the thermostat housing transmits engine temperature to the management system and gauge. Faults are logged as codes by the ECU which can be accessed through a diagnostic connector. To replace the sensor, drain the cooling system, disconnect wiring and take specific steps for different engine models. Reassemble, top up coolant, afterwards.