DTC U0284, Additional Diagnostics Added – 2017-2019 Subaru Impreza

2019 Subaru Impreza

NHTSA ID Number: 10150933 Manufacturer Communication Number: 07-140-18 Summary This bulletin announces an additional troubleshooting step to follow when diagnosing a DTC U0284: “LOST COMMUNICATIONWITH ACTIVE GRILLE SHUTTER MODULE “A”. Water intrusion into the harness wiring leading to connector B63 for the Active Grille Shutter (AGS) may lead to corrosion of the harness wiring and/or connector terminals …

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