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Acura DTC

Acura DTC P0499

Manufacture

Acura DTC

Code

P0499

Definition

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

  • Poor connections or loose terminals at the EVAP canister vent shut valve and the PCMPCM may need to be updated with the latest softwareFaulty PCMFaulty EVAP canister vent shut valve

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