Service bulletins for the 2013 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.
503 on file from NHTSA, as of 2026-10-19.
About P0128 on the 2013 Subaru Legacy: what the code means, and the bulletins and recalls about the same components.
By type
By component
By trouble code
Only bulletins with trouble code: P0128 are shown. Show all
| 095613 | 2023-05-08. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING. Countermeasure Thermostat Availability for DTC P0128 |
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| 1111112R | 2023-04-17. Service bulletin. ENGINE AND ENGINE COOLING. If you encounter a vehicle which has P0128 stored in memory, it may be caused by a very slight variation in coolant temperature between the left and right cylinder bank. |
| 09-56-13 | 2017-03-01. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. "A COUNTERMEASURE THERMOSTAT HAS BEEN RELEASED TO ADDRESS A RARE CONDITION WHICH MAY OCCUR DURING ENGINE SOAK IN COLD AMBIENT TEMPERATURES. IN THESE RARE CASES, AFTER AN EXTENDED COLD SOAK, COOLANT MAY ENTER THE THERMOSTAT’S INTERNAL PISTON. IF THIS OCCURS, THE THERMOSTAT MAY OPEN AT A TEMPERATURE WHICH IS LOWER THAN SPECIFIED AND CAUSE DTC P0128 TO BE STORED IN THE ECM MEMORY." |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.