DTC P0499

DTC P0499  : EVAP Canister Vent Shut Valve Circuit High Voltage

NOTE:  Before you troubleshoot, review the general troubleshooting information .

DTC (PGM-FI)

1. Problem verification

   -1. Turn the vehicle to the ON mode.

   -2. Clear the DTC with the HDS.

   -3. Select the EVAP TEST in the INSPECTION MENU, and do the EVAP CVS ON in the SINGLE SOLENOID with the HDS.

   SINGLE SOLENOID

   Check for Pending or Confirmed DTCs with the HDS.

   DTC Description	Confirmed DTC	Pending DTC	Freeze Frame
   P0499 EVAP Canister Vent Shut Valve Circuit High Voltage

   Is DTC P0499 indicated?

   YES 

   The failure is duplicated. Update the PCM if it does not have the latest software, or substitute a known-good PCM , then recheck. If DTC P0499 goes away and the PCM was updated, troubleshooting is complete. If DTC P0499 goes away and the PCM was substituted, replace the original PCM .

   NO 

   Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the EVAP canister vent shut valve and the PCM. If the freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the freeze data/on-board snapshot .