P2419
EVAP System Switching Valve Control Circuit Low
Evaporative emissions (EVAP)
Generic OBD-II
Low
What it means
P2419 means the ECM detected low voltage on the control circuit for the evaporative emissions (EVAP) switching valve — typically a short to ground or an open. That valve routes vapor during EVAP self-tests, so the fault is about emissions control rather than how the car drives. The usual causes are a failed valve, wiring or connector damage, or a control-circuit fault.
Low
Can I keep driving? Yes — the car drives normally; this is an emissions-monitoring fault, not a performance problem.
Common symptoms
What you'll notice
- Check-engine light on
- No noticeable change in how the engine runs
- Possible faint fuel odor
- May fail an emissions test
Common causes
Most likely first
- EVAP switching valve control circuit shorted to ground or openLikely
- Faulty EVAP switching valveCommon
- Damaged wiring or a corroded connector at the valveCommon
- Poor ground or driver-circuit fault in the PCM/ECMLess often
How to diagnose & fix
Work through it in order
- Read freeze-frame, then inspect the switching valve connector and wiring for a short to ground or open.
- Measure the valve's resistance and compare to spec.
- Check the control circuit and ground back to the ECM.
- Replace the EVAP switching valve if it has failed.
- Clear the code and re-test over a drive cycle.
FAQ
Quick answers
Is it safe to drive with P2419?+
Yes. It affects the EVAP system, not drivability. Repair it to pass emissions and keep fuel vapor contained.
Can I just clear P2419?+
You can, but it returns until the valve, its wiring, or the control circuit is fixed.
Related codes
Often seen with P2419
Read & clear P2419 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX