Subaru Legacy BN/BS (2015-2019) Service Manual: Installation

Inspection

Check that the resonator chamber has no deformation, cracks or other damages. ...

Intake (induction)(h6do)

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Other materials:

Dtc p0128 coolant thermostat (engine coolant temperature below thermostat regulating temperature)
DTC DETECTING CONDITION:Detected when two consecutive driving cycles with fault occur.TROUBLE SYMPTOM:Thermostat remains open.CAUTION:After servicing or replacing faulty parts, perform Clear Memory Mode Clear Memory Mode > OPERATION, and Inspection Mode Inspection Mode > PROCEDURE.STEPCHECKYESNO1. ...