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The canister purge system is monitored primarily by the Engine Control Module (ECM) or Powertrain Control Module (PCM). These modules use various sensors, such as the manifold absolute pressure (MAP) sensor and the fuel tank pressure sensor, to assess the operation of the system. They check for proper vacuum levels and ensure that fuel vapors are being effectively purged from the charcoal canister into the intake manifold for combustion. If any discrepancies are detected, error codes may be triggered, indicating potential issues with the purge system.

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2mo ago

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