Powertrain, generic (extended)

P2419 EVAP System Switching Valve Control Circuit Low

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modeNo

P2419 reports that the control circuit of the EVAP switching valve reads low - usually the control line is shorted to ground, or the driver stage measures too little voltage. Karma's Revero/GS-6 bulletin lists P2419 for the rear fuel tank isolation valve controlled by the ECM. Subaru's bulletin 09-103-23 for 2015 Legacy and Outback with an evaporative leak check module (ELCM) tells technicians to look for P2419 and P2420 whenever the ELCM pump fault P2404 is stored, because the switching valve sits in the same module. Ford, by contrast, reports every circuit fault of this valve as P2418. CARB requires output components to be checked for circuit faults. P2420 is the high-side fault, P2418 the open circuit. The leak test is suspended and the warning light comes on.

Likely causes

Control wire shorted to ground (chafed near tank or frame)
Shorted coil in the switching valve or leak check module
Water ingress into the leak check module

Symptoms

  • Check engine light
  • EVAP readiness not set
  • Often stored together with leak detection pump codes

Repair estimate

DifficultyMediumDIY possible
Parts and labour€40–450
Time0.5–2.5 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

evap switching valveevap leak detection pumpvalve wiring

Related codes

P2418P2420P2404P2401

References: law.cornell.edu, static.nhtsa.gov, static.nhtsa.gov.