Subaru Impreza 2011 — technical service bulletin
Bulletin WVT-30 · NHTSA communication 10034046 · issued Aug 1, 2010
Technical service bulletin
communication type
Electrical System
component
2011
model years
3
vehicle entries
Official summary
Subaru service campaign: see document search button for owner letter. Engine control module (ecm) reprogramming. A modification to the engine control module (ecm) software logic has been developed to improve the performance of the emission control system. This software change will not adversely affect fuel economy or performance. Csc letter was rec'd. *pe
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.