Service bulletin WQD-40
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.
| Type | Service bulletin |
|---|---|
| NHTSA id | 10080261 |
| Published by NHTSA | 2016-09-16 |
| Manufacturer's number | WQD-40 |
| Manufacturer's date | 2013-01-01 |
| NHTSA component | ELECTRICAL SYSTEM:CYBERSECURITY; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR; ELECTRICAL SYSTEM:SOFTWARE |
NHTSA's summary
SUBARU OF AMERICA, INC. HAS DETERMINED VEHICLES AFFECTED BY THIS SERVICE PROGRAM REQUIRE FRONT CATALYTIC CONVERTER REPLACEMENT AND ECM REPROGRAMMING. FOR VEHICLES AFFECTED BY THIS SERVICE PROGRAM, EFFICIENCY OF THE FRONT CATALYTIC CONVERTER MAY DEGRADE OVER TIME. IF THE CATALYTIC CONVERTER EFFICIENCY DEGRADES BEYOND AN ACCEPTABLE LEVEL, THE VEHICLE MAY BE RELEASING AIR POLLUTANTS WHICH EXCEED CALIFORNIA STANDARDS. TO CORRECT THIS CONDITION, IT WILL BE NECESSARY TO REPLACE THE FRONT CATALYTIC CONVERTER AND REPROGRAM THE ECM SOFTWARE LOGIC, IMPROVING MANAGEMENT OF THE CATALYTIC CONVERTER. THIS SOFTWARE CHANGE WILL NOT ADVERSELY AFFECT FUEL ECONOMY OR PERFORMANCE OF THE VEHICLE.
The document
No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.
Components
Electrical system, Engine, Exhaust and emissions, Catalytic converter, Software
| SUBARU FORESTER | 2008, 2009 |
|---|---|
| SUBARU LEGACY | 2008, 2009 |
| SUBARU OUTBACK | 2008, 2009 |
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| WQD40 | 2023-05-08. Service bulletin. Subaru of America, Inc. has determined vehicles affected by this Service Program require front catalytic converter replacement and ECM reprogramming. |
|---|---|
| WVU31R | 2018-04-02. Service bulletin. 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. |
| WQD-40DA | 2016-09-14. Service bulletin. SUBARU OF AMERICA, INC. HAS DETERMINED THAT VEHICLES AFFECTED BY THIS SERVICE PROGRAM REQUIRE FRONT CATALYTIC CONVERTER REPLACEMENT AND ECM REPROGRAMMING. FOR VEHICLES AFFECTED BY THIS SERVICE PROGRAM, EFFICIENCY OF THE FRONT CATALYTIC CONVERTER MAY DEGRADE OVER TIME. IF THE CATALYTIC CONVERTER EFFICIENCY DEGRADES BEYOND AN ACCEPTABLE LEVEL, THE VEHICLE MAY BE RELEASING AIR POLLUTANTS THAT EXCEED CALIFORNIA STANDARDS. TO CORRECT THIS CONDITION, IT WILL BE NECESSARY TO REPLACE THE FRONT CATALYTIC CONVERTER AND REPROGRAM THE ENGINE CONTROL MODULE SOFTWARE LOGIC WHICH IMPROVES MANAGEMENT OF THE CATALYTIC CONVERTER. THIS SOFTWARE CHANGE WILL NOT ADVERSELY AFFECT FUEL ECONOMY OR PERFORMANCE OF THE VEHICLE. REPLACEMENT PARTS AND ECM REPROGRAMMING PAK FILES WILL NOT BE AVAILABLE FOR ALL MODELS AT THE TIME THIS SERVICE PROGRAM IS INITIALLY RELEASED. PAK FILES WILL BE AVAILABLE IN ACCORDANCE WITH THE SCHEDULE FOUND ON PAGE 4 OF THE WQD-40 BULLETIN. ADDITIONALLY, BECAUSE THIS PROGRAM AFFECTS A HIGH VOLUME OF VEHICLES WITHIN THE AFFECTED STATES, MAILING OF OWNER NOTIFICATION LETTERS WILL BE PHASED ACCORDING TO THE FOLLOWING SCHEDULE. THIS SCHEDULE COINCIDES WITH REPLACEMENT PART AND PAK FILE AVAILABILITY. |
| WQD-40 | 2013-03-26. Service bulletin. SUBARU: OVER TIME, FRONT CATALYTIC CONVERTER EFFICIENCY DEGRADES BEYOND AN ACCEPTABLE LEVEL AND RELEASES AIR POLLUTANTS THAT REQUIRES THE FRONT CATALYTIC CONVERTER TO BE REPLACED AND ECM TO BE REPROGRAMMED. MODELS 2008-2009 LEGACY, OUTBACK, FORESTER. *PE |
| WVM-23 | 2011-06-28. Service bulletin. SUBARU SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. A SOFTWARE PROBLEM IS CAUSING THE CATALYTIC CONVERTER TO DEGRADE WHEN DRIVING AT HIGH SPEEDS. THIS WILL CAUSE THE ENGINE LIGHT TO COME ON. *RM |
| SB-WVM-23 | 2010-04-07. Service bulletin. SUBARU SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. ENGINE CONTROL MODULE (ECM) REPROGRAMMING. UNDER CERTAIN SEVERE DRIVING PATTERNS, SUCH AS HIGH SPEED HIGHWAY/UPHILL DRIVING AND/OR ACCELERATING WITH HIGH ENGINE REVOLUTIONS, THE EFFICIENCY OF AN AFFECTED VEHICLE'S CATALYTIC CONVERTER MAY BEGIN TO DEGRADE BEYOND DESIGN PARAMETERS. CSC LETTER WAS RECEIVED. *PE |