Fault Code P0444 - 03 9N1 Polo 1.4

Keef

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May 10, 2020
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Hi guys,


I've got a 2003 Polo 9N1 1.4L Petrol. It has a Engine Management Light on giving the code P0444 Evap Emission on system purge control Valve Circuit Open. I've tried wiping which works for roughly 5-10 seconds once car is started. I've replaced the solenoid/ Purge valve with two from a local breakers and wiped the code each time but it still came back. Any ideas on what it could be?


TIA Keef
 

Keithuk

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VAG Error Code: 001092
EOBD II Error Code: P0444

Fault Location:
Evaporative Emission (EVAP) Solenoid Control Valve 1 (N80) - Open Circuit

Possible Cause:
Malfunction Indicator Lamp (MIL)(K83) active.

Fuse(s).
Wiring/Connector(s) open circuit.
Evaporative Emission (EVAP) Control Valve 1 (N80) faulty.
Engine Control Module (ECM).

Possible Solutions:
Check/Replace Fuse(s).
Check/Replace all faulty Wiring/Connector(s).
Read Measuring Value Blocks (MVB).
Ohm test Evaporative Emission (EVAP) Control Valve 1 (N80).

When is the code detected?:
An excessively low voltage signal is sent to Engine Control Module (ECM) through the valve.

Description:
The Evaporative Emission (EVAP) System canister purge volume control solenoid valve uses a ON/OFF duty to control the flow rate of fuel vapour 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 vapour that will flow through the valve.

As taken from my new EOBD II Fault Codes Software
 
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