P2419
Evaporative Emission System Switching Valve Control Circuit Low
- Severity
- Low
- Driving
- Drivable — book it in
The control circuit for the evaporative emission switching valve is reading low, which normally means a short to earth. This valve directs where the leak detection pump sends its air - through the system under test, or through a calibrated reference orifice the module uses to know what a genuine small leak looks like. Without it the leak test has nothing to compare against and cannot run.
Possible causes
- CommonCorroded or water-damaged connector at the valve
- CommonFailed valve winding
- CommonDamaged underbody wiring
- PossibleBlown fuse in the shared EVAP supply
- RareFailed driver inside the control module
What you might notice
- Check engine light on
- Failed emissions test
- Occasionally a smell of fuel
- Usually nothing else - EVAP faults rarely affect how the car drives
What to check, in order
- Inspect the connector and its wiring before condemning the component. Everything in this system lives under the vehicle in the path of road salt and spray, and a corroded connector produces these codes far more often than a failed part does.
- Measure the valve winding's resistance against specification. Open or shorted is conclusive.
- Check whether other EVAP components report faults at the same time. Several at once points at the shared fuse, feed or earth rather than at several failed valves.
- Command the valve with a scan tool and listen for it to click.
Read this code from your own car
Plug an ELM327 adapter into the OBD-II port under the dashboard. Pin16 reads every stored, pending and permanent code, explains each one like this page does — offline, with no account — and shows what the car recorded when the fault was set.
Where this code sits
P00xxP01xxP02xxP03xxP04xxP05xxP06xxP07xxP08xxP09xxP0AxxP0BxxP0CxxP0DxxP0ExxP0FxxP10xxP11xxP12xxP13xxP14xxP15xxP16xxP17xxP18xxP19xxP1AxxP1BxxP1CxxP1DxxP1ExxP1FxxP20xxP21xxP22xxP23xxP24xxP25xxP26xxP27xxP28xxP29xxP2AxxP2BxxP2CxxP2DxxP2ExxP2FxxP30xxP31xxP32xxP33xxP34xxP35xxP36xxP37xxP38xxP39xxP3AxxP3BxxP3CxxP3DxxP3ExxP3Fxx