P0443 MERCEDES-BENZ - Evaporative Emission Control System Purge Control Valve Circuit Malfunction
P0443 MERCEDES-BENZ 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
How is the P0443 MERCEDES-BENZ code repair?Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.
What is the cost to diagnose the P0443 MERCEDES-BENZ code
Labor: 1.0The cost to diagnose the P0443 MERCEDES-BENZ code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
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When is the code detected?An improper voltage signal is sent to Engine Control Module (ECM) through the valve.
- Engine Light ON (or Service Engine Soon Warning Light)
P0443 MERCEDES-BENZ MeaningThe 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.
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