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

Inspection

For inspection procedure, refer to “Diagnostics for Engine Starting Failure”. Diagnostics for Engine Starting Failure > IGNITION CONTROL SYSTEM ...

Spark plug

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Other materials:

Dtc u0100 lost communication with ecm/pcm "a"
DTC DETECTING CONDITION:No data is received from ECM.TROUBLE SYMPTOM:Cooperation control of transmission may not operate properly.STEPCHECKYESNO1.CHECK PERFORMING OF BASIC DIAGNOSTIC PROCEDURE.Was the basic diagnostic procedure performed up to STEP 8- Diagnostic Procedure with Diagnostic Trouble Cod ...