# P2404 on the 2019 Subaru WRX

The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.

Nobody has written a description of this code yet.

## Bulletins for this model year that name P2404

- [11022300](https://open.wenmarpro.com/bulletins/11022300), 2025-09-02: 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. \(not applicable for 15\-18 models\)
- [11017434](https://open.wenmarpro.com/bulletins/11017434), 2025-05-01: This bulletin announces the diagnostic procedures and availability of reprograming files to rectify the following Diagnostic Trouble Codes \(DTCs\). The ELCM may accumulate condensation causing the inaccurate detection of P2404. P0420 may become falsely detected due to unstable combustion caused by a downshift. The new reprogramming files contains enhanced software allowing for condensation conditions and downshift rotational speeds be more accurately detected by the Engine Control Module \(ECM\).
- [11016166](https://open.wenmarpro.com/bulletins/11016166), 2025-04-01: "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. \(not applicable for 15\-18 models\)"