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Home >> Volvo >> 2021 >> S90 T6 R-Design >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Electrical Equipment - Design >> (Coolant Temperature Sensor, Water Cooled Charge Air Cooler) >> Coolant Temperature Sensor, Water Cooled Charge Air Cooler (7/395) [2021-2022, B420T] >> Diagnostic Information

Diagnostic Information

The coolant temperature sensor, water cooled charge air cooler, does not have a built-in diagnostic system. The Engine Control Module (ECM) controls the sensor, sets DTCs and has readable parameters for the sensor.