Technical Service Bulletin 09-131-25R — 2021 SUBARU WRX
ENGINE
Bulletin Details
| TSB ID | 09-131-25R |
| Manufacturer | |
| Vehicle | 2021 SUBARU WRX |
| Component | ENGINE |
| Communication Date |
Bulletin Summary
This bulletin announces the diagnostic procedures and availability of reprograming files to rectify the following Diagnostic Trouble Codes (DTCs). • P2404: EVAP System Leak Detection Pump Sense Circuit Range/Performance. • P0420: Catalyst System Efficiency Below Threshold Bank 1. (not applicable for 15-18 models)
About Technical Service Bulletins
A Technical Service Bulletin (TSB) is a document issued by a vehicle manufacturer to its dealers, describing a known issue with a specific vehicle or set of vehicles and the recommended procedure to fix it. Unlike recalls, TSBs are not mandatory and are typically only performed if an owner reports the related issue. However, TSBs can be an indicator of common problems with a vehicle.