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. Remove the rear differential. (Sedan model) Rear Differential (VA-type) > REMOVAL2. Disconnect the drain tube (A) from the drain filter.NOTE:Disconnect the quick connector as shown in the figure.(a)Slider3. Remove the drain filter.4. Disconnect the drain tube, and remove the drain tube from tube ...