Passat V6-2.8L (ATQ) (2004)
Heated Oxygen Sensor (HO2S) 2 -G108-, 4-pin harness connector (black, arrow).
NOTE:
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To reach this harness connector, remove coolant reservoir attachment screws and tilt coolant reservoir to the side. The coolant hoses remain
connected.
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Bank 1 = Cylinder bank 1, in direction of travel, right
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Bank 2 = Cylinder bank 2, in direction of travel, left
Vehicles with engine code AHA
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Measure resistance for sensor heater at connector to oxygen sensor terminal 1+2.
Specified value: 0.0 to 19.9 ohms
Vehicles with engine code ATQ
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Measure resistance for sensor heater at connector to oxygen sensor terminal 1 +2.
Specified value: max. 200 ohms
Continuation for all vehicles
If specified value is not obtained:
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Replace the respective oxygen sensor:
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Heated Oxygen Sensor (HO2S) -G39- before catalytic converter
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Heated Oxygen Sensor (HO2S) 2 -G108- before catalytic converter.
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Erase DTC memory of Engine Control Module (ECM). Diagnostic mode 4: Reset/erase diagnostic data. See: Testing and Inspection/Scan Tool