P2419 — EVAP System Switching Valve Control Circuit Low

What Does P2419 Mean?

P2419 is a diagnostic trouble code indicating: EVAP System Switching Valve Control Circuit Low. The ECM detected a low voltage on the EVAP switching valve control circuit. This code has been reported in NHTSA complaints across 2 different vehicle models, most commonly on Toyota Corolla and is often stored alongside P2401, P2402, and P043E.

Symptoms of P2419

⚠️ Check Engine Light (MIL) illuminated
⚠️ EVAP-related codes stored together (P2401, P2402, P043E, P043F)
⚠️ Possible fuel odor near engine
⚠️ Possible failed smog/emissions test

Common Causes

🔍 Open circuit or broken wire to EVAP switching valve
🔍 Failed EVAP switching valve (stuck open/closed)
🔍 Corroded or water-damaged EVAP valve connector
🔍 Faulty EVAP canister saturated with water
🔍 ECM/PCM fault (rare)

P2419 Reports by Year

2021

2

2023

1

Real Owner Reports

From NHTSA complaint database — actual owner descriptions.

"STARTED CAR THIS MORNING AND THE CHECK ENGINE LIGHT CAME ON. TOOK TO PARTS STORE AND HOOKED IT UP TO THE COMPUTER AND FOUND CODES (P2401, P043E, P043F, P2402, P2419) EVERYTHING I HAVE RESEARCHED COMES BACK TO EVAP CANISTER FAILURE, AND POSSIBLE WIRING FAILURE."
— Toyota Corolla owner, 01/08/2021

"Known well issues, faulty tank getting water to canister."
— Toyota Corolla owner, 07/10/2023

"Recurring Problems with AWD Malfunction, Engine Light On. AWD System Malfunction/2WD Mode Engaged and the Engine Light came on."
— Toyota Rav4 owner, 05/31/2021

Source: NHTSA Complaints Database

Most Reported Vehicles for P2419

Based on NHTSA owner complaint data.

#	Vehicle	Reports
1	TOYOTA COROLLA
2	TOYOTA RAV4

P2419 Reports by Vehicle

Detailed NHTSA complaint analysis for each vehicle model.

TOYOTA COROLLA

2 NHTSA reports · Peak: 2007, 2009

Frequently Asked Questions

What does P2419 mean?

P2419 means the ECM detected a low voltage on the EVAP switching valve control circuit. It usually indicates a faulty valve, broken wire, or corroded connector.

Is P2419 serious?

Not immediately dangerous, but it disables proper EVAP function, causing emissions issues. Fix before your next emissions test.

Why does P2419 appear with P2401 and P2402?

These codes are all part of the EVAP leak detection pump circuit on vehicles like the Toyota Corolla. A failed EVAP canister from water intrusion can trigger all three simultaneously.

What vehicles commonly get P2419?

Toyota Corolla and RAV4 are the most commonly reported models per NHTSA data. Water intrusion into the EVAP canister is a known Toyota issue.

What To Do Next

Possible Fixes

🔧 Inspect wiring from ECM to EVAP switching valve for breaks or corrosion
🔧 Test EVAP switching valve with multimeter; replace if coil resistance is out of spec
🔧 Inspect and clean EVAP valve harness connector; apply dielectric grease
🔧 Inspect EVAP canister for saturation (water intrusion is a known issue on Toyota Corolla)
🔧 If other components check out, inspect and update ECM firmware

1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

P2419: EVAP System Switching Valve Control Circuit Low