P0443 CHEVROLET - Evaporative Emission Control System Purge Control Valve Circuit Malfunction
- Faulty Evaporative Emission (EVAP) Purge Solenoid Control
- Evaporative Emission (EVAP) Purge Solenoid Control harness is open or shorted
- Evaporative Emission (EVAP) Purge Solenoid Control circuit poor electrical connection
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When is the code detected?
- Engine Light ON (or Service Engine Soon Warning Light)
P0443 Chevrolet Description
The Evaporative Emission System (EVAP) canister purge volume control solenoid valve uses a ON/OFF duty to control the flow rate of fuel vapor from the EVAP canister. The EVAP canister purge volume control solenoid valve is moved by ON/OFF pulses from the Powertrain Control Module (PCM). The longer the ON pulse, the greater the amount of fuel vapor that will flow through the valve.