DTC P0499 Acura
Evaporative Emission (EVAP) Canister Vent Shut Valve Control Circuit High Voltage
Evaporative Emission (EVAP) Canister Vent Shut Valve Control Circuit High Voltage
Description
If the return signal is ON when the Powertrain Control Module (PCM) outputs the OFF signal to the EVAP canister vent shut valve, the PCM detects a malfunction. The execution time is continuous and the duration time is 5 seconds or more. DTC P0498 is not active. The return signal is ON for at least 5 seconds when the PCM outputs the Low signal to the EVAP canister vent shut valve. NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot.
Cause and Solution
Poor connections or loose terminals at the EVAP canister vent shut valve and the PCM
PCM may need to be updated with the latest software
Faulty PCM
Video Guide
Diagnostic Info
- DTC Code: P0499
- Brand: Acura