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Service bulletins for the 2020 Subaru Legacy

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

595 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Only bulletins with component: Transmission and driveline are shown. Show all

Bulletins, newest first
SubaruNet Announ2022-08-02. Service bulletin. POWER TRAIN; EQUIPMENT ADAPTIVE/MOBILITY. "Subaru of America, Inc. (Subaru) is initiating this safety and emissions recall for certain 2020-2021 model year turbo Legacy vehicles and 2020-2021 model year turbo Outback vehicles in which the Continuously Variable Transmission (CVT) chain may slip and/or break. (New recall WRK22 will cover 182 pre-production vehicles not already included in the WRK21 recall initiated in December 2021. These additional 182 vehicles will require the same repair. Background)."
WRK-21R2022-08-02. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; POWER TRAIN. Subaru of America, Inc. (Subaru) is initiating a new safety and emissions Recall for certain 2019 - 2020 model year Ascent vehicles, 2020 model year turbo Legacy vehicles, and 2020 model year turbo Outback vehicles in which the Continuously Variable Transmission (CVT) chain may slip and/or break.
SubaruNet Announ2022-07-06. Service bulletin. POWER TRAIN; EQUIPMENT. WRK-21 rental pre-authorization.
SubaruNet Announ2022-07-06. Service bulletin. POWER TRAIN. UPDATE Subaru Safety & Emissions Recall: WRK-21 – CVT Chain Guide Breakage.
16-136-22R2022-05-03. Service bulletin. POWER TRAIN; EQUIPMENT; ENGINE AND ENGINE COOLING. This service bulletin provides a temporary repair procedure to address vibrations and/or judder concerns experienced on turns during acceleration.
16-136-22R2022-04-05. Service bulletin. POWER TRAIN. This service bulletin provides a temporary repair procedure to address vibrations and/or judder concerns experienced on turns during acceleration.
16-132-20R2022-03-04. Service bulletin. POWER TRAIN. This bulletin provides updated diagnostic procedures to follow and a brief questionnaire to complete when diagnosing an alleged Chain Slip condition on the TR580 and TR690 model CVT transmissions.
Subarunet Announ2022-03-04. Service bulletin. POWER TRAIN. WRK-21 CVT Chain Guide Breakage Recall - Customer communications and rental.
Subarunet Announ2022-03-04. Service bulletin. POWER TRAIN. Subaru Safety & Emissions Recall: WRK-21 – CVT Chain Guide Breakage
16-125-192022-03-04. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:INTERNAL:CVT; POWER TRAIN. This bulletin outlines design changes made to the TR580 CVT oil pan assembly.
16-136-22R2022-02-04. Service bulletin. POWER TRAIN. This service bulletin provides a temporary repair procedure to address vibrations and/or judder concerns experienced on turns during acceleration.
03-87-212022-02-04. Service bulletin. POWER TRAIN. This bulletin provides a repair procedure for R152 type rear differentials.
16-132-20R2022-02-04. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; POWER TRAIN:AUTOMATIC TRANSMISSION. This bulletin provides updated diagnostic procedures to follow and a brief questionnaire to complete when diagnosing an alleged Chain Slip condition on the TR580 and TR690 model CVT transmissions.
SubaruNet Announ2022-01-04. Service bulletin. POWER TRAIN. Subaru of America, Inc. (Subaru) is initiating a new safety and emissions recall for certain 2019 - 2020 model year Ascent vehicles, 2020 model year turbo Legacy vehicles, and 2020 model year turbo Outback vehicles in which the Continuously Variable Transmission (CVT) chain may slip and/or break.
16-132-20R2021-08-04. Service bulletin. POWER TRAIN. Diagnostic Information for Alleged Chain Slip Condition on TR580 / TR690 Transmissions.
16-131-20R2021-07-03. Service bulletin. POWER TRAIN. This bulletin provides corrected diagnostics containing a revised flow for certain CVT solenoid related DTCs.
16-132-20R2021-03-04. Service bulletin. POWER TRAIN; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. This Service Information Bulletin provides updated diagnostic procedures to follow and a brief questionnaire to complete when diagnosing an alleged Chain Slip condition on the TR580 and TR690 model CVT transmissions.
16-128-20R2021-02-01. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. This bulletin announces availability of a new transmission harness for use when diagnosis of DTC P0842 -TRANSMISSION FLUID PRESSURE SENSOR / SWITCH “A” CIRCUIT LOW determines the sensor itself is OK but the transmission wiring harness is NG.
16-132-20R2021-02-01. Service bulletin. POWER TRAIN. This bulletin provides updated diagnostic procedures to follow and a brief questionnaire to complete when diagnosing an alleged chain slip condition on the TR580 and TR690 model CVT transmissions.
16-132-20R2021-01-05. Service bulletin. POWER TRAIN; EQUIPMENT. This Service Information Bulletin provides updated diagnostic procedures to follow when diagnosing an alleged Chain Slip condition on the TR580 and TR690 model CVT transmissions.
16-131-202020-12-05. Service bulletin. POWER TRAIN. This Service Information Bulletin provides corrected diagnostics containing a revised flow for certain CVT solenoid related DTCs.
16-128-20R2020-11-05. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. This bulletin announces availability of a new transmission harness for use when diagnosis of DTC P0842 determines the sensor itself is OK but the transmission wiring harness is NG.
09-70-192019-11-01. Service bulletin. POWER TRAIN. This Service Information Bulletin outlines design changes made to the coolant hoses for the CVT fluid cooler and the spring-type clamps used to secure them.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.