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Diagnostic Procedure with Diagnostic Trouble Code (DTC)
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DTC U0420 Invalid Data Received From Power Steering Control Module
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Trouble symptom
DTC U0420 Invalid Data Received From Power Steering Control Module: Trouble symptom
Cooperation control with EPS Control Module does not operate properly.
Fig 1: Invalid Data Received From Power Steering Control Module Diagnostics Flowchart
Courtesy of SUBARU OF AMERICA, INC.