OBD Guide

P2418

EVAP System Switching Valve Control Circuit/Open

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–56 (est.)

Symptoms

  • Check Engine Light Is On
  • Increased fuel consumption
  • Problems starting the engine
  • Unstable engine idling
  • Increased level of harmful emissions

Causes

  • Open or short circuit in EVAP valve control circuit
  • EVAP switch valve malfunction
  • Damaged wiring harness or connector
  • Problems with the engine control unit (ECU)
  • Corroded contacts or poor connection

How to Fix

  1. Check the continuity of the EVAP valve control circuit
  2. Check the resistance and operation of the EVAP valve
  3. Inspect the wiring harness and connectors for damage
  4. Check fuses and relays associated with the EVAP system
  5. If necessary, replace the EVAP valve or repair the wiring

Related codes

Error P2418 by Vehicle Brand