Golf L4-1.8L Turbo (AWW) (2003)
Possible causes of malfunction if probe control frequency is too slow:
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The slots or holes in probe body are blocked
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The probe vent hole in area of connecting wire is blocked
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The probe has been overheated (glazed)
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The probe has been damaged by leaded fuel
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Check diagnosis result in display zone 2:
Specification: B1-S2 OK
NOTE: It can take a few minutes until display jumps from "Test ON" to "B1-P2 OK".
If "B1-P2" OK is displayed:
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Press -> key.
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Check DTC Memory. Refer to "Displaying and Reading Trouble Codes/With Manufacture Scan Tool/Check DTC Memory (Function 02)" See:
Testing and Inspection
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Carry out a test drive to remove possible residue on oxygen sensor and repeat check.
Observe the valid safety precautions when carrying out a road test See: Service Precautions/Technician Safety Information
If the specifications are again not attained:
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Replace the Oxygen Sensor (O2S) behind Three Way Catalytic Converter (TWC) (G130).
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Check DTC Memory, if necessary, repair any malfunctions and then Erase DTC Memory,Checking and Erasing DTC Memory. Refer to
"Displaying and Reading Trouble Codes/With Manufacture Scan Tool/Check DTC Memory (Function 02)" See: Testing and Inspection
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Read readiness code. If DTC memory has been erased or engine control module was disconnected from permanent positive, readiness code must
be generated again: Refer to "Monitors, Trips and/or Drive Cycle/ Reading Readiness Code" See: Testing and Inspection
Engine code AWW, Refer to "Monitors, Trips and/or Drive Cycle/Generating Readiness Code" See: Testing and Inspection
Engine code AWP, Refer to "Monitors, Trips and/or Drive Cycle/Generating Readiness Code" See: Testing and Inspection
Checking basic voltage