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Service bulletins for the 2012 Subaru B9 Tribeca

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.

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

About P0128 on the 2012 Subaru B9 Tribeca: 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

Bulletins, newest first
1111112R2023-04-17. 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.
11-111-12R2017-03-06. Service bulletin. ENGINE AND ENGINE COOLING. P0128 COOLANT THERMOSTAT (ENGINE COOLANT TEMPERATURE BELOW THERMOSTAT REGULATING TEMPERATURE)

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