Subaru Legacy BN/BS (2015-2019) Service Manual: Dtc u0101 lost communication with tcm

Dtc b2801 tcm abnormal

Detected when error occurs in the automatic transmission.NOTE:Check the automatic transmission. Basic Diagnostic Procedure > PROCEDURE ...

Diagnostics with phenomenon

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Other materials:

Removal
1. Disconnect the ground terminal from battery sensor. NOTE2. Remove the clip (A) from the air intake boot.3. Loosen the clamp (B) connecting the air intake boot and air cleaner case (rear).4. Loosen the clamp (C) which connects the air intake boot and throttle body.5. Remove the air intake boot fr ...