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P0444 MERCEDES-BENZ

P0444 MERCEDES-BENZ - Evaporative Emission Control System Purge Control Valve Circuit Open

Repair Importance Level: 1/3
Repair Difficulty Level: 3/3   
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Possible causes

  • 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

When is the code detected?

- An excessively low voltage signal is sent to ECM through the valve

Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P0444 Mercedes-benz 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 Engine Control Module (ECM). The longer the ON pulse, the greater the amount of fuel vapor that will flow through the valve.
OBDII Code P0444 Mercedes-benz - Evaporative Emission Control System Purge Control Valve Circuit Open - AutoCodes.com

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P0444 MERCEDES-BENZ Comments

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