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Service bulletins for the 2006 Subaru Impreza

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.

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

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Bulletins, newest first
02-172-18R2018-06-11. Service bulletin. ENGINE; EQUIPMENT. This bulletin provides details regarding a new oil filler tube o-ring developed to address engine oil seepage concerns. This seepage may accumulate along the bottom sealing surface of the rocker cover. The new o-ring utilizes material which has an increased resistance to engine heat.
02-172-18R2018-06-11. Service bulletin. ENGINE. This bulletin provides details regarding a new oil filler tube o-ring developed to address engine oil seepage concerns. This seepage may accumulate along the bottom sealing surface of the rocker cover. The new o-ring utilizes material which has an increased resistance to engine heat.
WQR53-memo2018-06-04. Service bulletin. AIR BAGS. NHTSA announced in a press conference today, the planned expansion of the airbag inflator recall to an additional 35 to 40 million vehicles from various manufacturers nationwide. We are currently assessing which of our models may be covered. We hope to make that determination soon. When specific vehicles are identified, owners will be notified plus vehicle identification numbers (VINs) can be researched on Subaru.com or on the NHTSA web site Safercar.gov.
WVU31R2018-04-02. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; ENGINE AND ENGINE COOLING. 2.5 Liter N/A engine only. REVISED. Subaru of America, Inc. has determined that vehicles affected by this Service Program require ECM reprogramming. A modification to the Engine Control Module 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. This software update is intended to improve vehicle emissions when the vehicle is operated in cold weather and the engine is turned off and restarted within short periods of time such as in several minute intervals. The A/F sensor contains a heating element, which is controlled by the ECM, and which assists the sensor in reaching an optimum temperature, resulting in better accuracy. When the vehicle is operated under the conditions described above, there could be a longer than desired delay in the ECM?s turning on the A/F sensor heating element, resulting in higher than desired emissions. This software enhancement will correct that condition.
01-168-09R2018-04-02. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. The purpose of this bulletin is to provide replacement key and immobilizer information along with an overview of the Subaru Lock Information web-site.
12-231-182018-03-13. Service bulletin. STRUCTURE:BODY. ( 2017-2018MY Impreza - 5 Dr Only)
01-168-09R2017-10-27. Service bulletin. EQUIPMENT. The purpose of this bulletin is to provide replacement key and immobilizer information along with an overview of the Subaru Lock Information web-site.
03-70-122017-03-06. Service bulletin. EQUIPMENT. REPAIR PROCEDURE FOR HIGH-PITCHED SOUND FROM EXTENSION HOUSING AREA USING LATEST GENERATION PRODUCTION PARTS
04-13-09R2017-02-27. Service bulletin. STEERING. IF YOU ENCOUNTER A VEHICLE THAT HAS A GROANING TYPE NOISE COMING FROM THE POWER STEERING PUMP WHEN THE WHEEL IS TURNED TO THE FULL RIGHT OR LEFT POSITION WHEN THE VEHICLE IS PARKED, IT MAY BE CAUSED BY THE RELIEF VALVE VIBRATING WITHIN THE PUMP. IN LIEU OF REPLACING THE POWER STEERING PUMP, THE RELIEF VALVE IS NOW AVAILABLE AS A REPLACEMENT PART.
04-13-09R2017-02-16. Service bulletin. EQUIPMENT:RECREATIONAL VEHICLE/TRAILER:LPG SYSTEMS:TANK VALVE/GAUGE. IF YOU ENCOUNTER A VEHICLE THAT HAS A GROANING TYPE NOISE COMING FROM THE POWER STEERING PUMP WHEN THE WHEEL IS TURNED TO THE FULL RIGHT OR LEFT POSITION WHEN THE VEHICLE IS PARKED, IT MAY BE CAUSED BY THE RELIEF VALVE VIBRATING WITHIN THE PUMP. IN LIEU OF REPLACING THE POWER STEERING PUMP, THE RELIEF VALVE IS NOW AVAILABLE AS A REPLACEMENT PART.
03-70-12R2017-01-31. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. REPAIR PROCEDURE FOR HIGH-PITCHED SOUND FROM EXTENSION HOUSING AREA USING LATEST GENERATION PRODUCTION PARTS - THIS BULLETIN PROVIDES PRODUCTION CHANGE, REPAIR PROCEDURE AND PARTS INFORMATION TO ADDRESS A CUSTOMER CONCERN OF A HIGH-PITCHED SOUND COMING FROM THE TRANSMISSION EXTENSION HOUSING AREA.
03-70-12R2016-09-14. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. THIS BULLETIN PROVIDES PRODUCTION CHANGE, REPAIR PROCEDURE AND PARTS INFORMATION TO ADDRESS A CUSTOMER CONCERN OF A HIGH-PITCHED SOUND COMING FROM THE TRANSMISSION EXTENSION HOUSING AREA. IN COLD TEMPERATURES, THERMAL CONTRACTION CAUSES SHRINKING OF THE TRANSMISSION CASE. IN HIGH TEMPERATURES, EXPANSION OF THE CASE OCCURS. THESE TEMPERATURE CHANGES AFFECT THE AMOUNT OF PRELOAD ON THE TRANSFER DRIVEN SHAFT BEARINGS. IN SOME RARE CASES, WHEN PRELOAD IS VERY NEAR THE LIMIT OF SPECIFICATION COMBINED WITH UNUSUAL DRIVING CONDITIONS, THIS THERMALLY-INDUCED PRE-LOAD CHANGE MAY CAUSE DAMAGE TO THE BEARINGS AND RESULT IN THE SOUND HEARD BY THE CUSTOMER. A CHANGE HAS BEEN MADE TO THE EXTENSION CASE AND A NEW “DISH PLATE” ADDED. THE MACHINING DEPTH OF THE EXTENSION CASE HAS BEEN INCREASED TO ACCOMMODATE THE NEW DISH PLATE. WHEN USED ALONG WITH A SELECTIVE THRUST WASHER, THE SPRING TENSION OF THE DISH PLATE HELPS TO MAINTAIN A CONSISTENT AMOUNT OF PRE-LOAD ON THESE BEARINGS THROUGHOUT VARYING TEMPERATURE CONDITIONS.
SPB-WVU-312011-06-29. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. SUBARU SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. ECM REPROGRAMMING PROCEDURE. 2006-2010 LEGACY/OUTBACK/FORESTER/IMPREZA. *RM UPDATED 9/26/11. *PE
SB-05-50-10R2011-06-08. Service bulletin. TIRES. SUBARU: THERE IS A STEERING WHEEL VIBRATION AT HIGHWAY SPEEDS DUE TO AN IMPORPER WHEEL BALANCE. *RM
SB-WVL-222010-04-07. Service bulletin. FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY. SUBARU SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. FUEL TANK ONE WAY FUEL VALVE. CERTAIN MODELS REQUIRE PERMANENT REMOVAL OF THE ONE WAY FUEL VALVE LOCATED IN THE FUEL TANK. THE ONE WAY FUEL VALVE IS LOCATED AT THE BASE OF A SMALL SUB CHAMBER CONTAINED IN THE FUEL TANK. CSC LETTER WAS RECEIVED. *PE
02-104-082008-06-11. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE. INTAKE MANIFOLD MODIFICATION. *NJ
1668062006-11-14. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. VEHICLES EQUIPPED WITH 4 EAT DIAGNOSTIC PROCEDURES FOR P0851/P0852. *KB
072006-09-12. Service bulletin. ELECTRICAL SYSTEM:WIRING:FUSES AND CIRCUIT BREAKERS. SBF-5 FUSE BLOWS. SUBARU TECHTIPS. *TT
1293062006-09-12. Service bulletin. EXTERIOR LIGHTING:TAIL LIGHTS. CONDENSATION IN REAR COMBINATION LAMP. *TT
072006-03-09. Service bulletin. SEATS:FRONT ASSEMBLY:SEAT HEATER/COOLER. CHANGE OF SEAT HEATER RELAY. *TT
110120052005-12-09. Service bulletin. ELECTRICAL SYSTEM:IGNITION. 2006MY INDICATOR LIGHTS. WHEN THE IGNITION KEY IS PLACED IN THE IGNITION, THE RING AROUND THE IGNITION SWITCH WILL FLASH GREEN. THIS IS NORMAL. TECHTIPS. SUBARU. *TT

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