Passat Sedan 4Motion W8-4.0L (BDP) (2002)
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Check wires between test box and 4-pin connector to Engine Control Module (ECM) for open circuit according to wiring diagram.
Wire resistance: max. 1.5 Ohms
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Also check wires for short circuit to B+ and Ground (GND).
Specified value: Infinity Ohms
If no malfunctions are found in wires:
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Replace the respective oxygen sensor:
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Bank 1 Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC)-G130-, item 6
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Bank 2 Oxygen Sensor (O2S) 2 Behind Three Way Catalytic Converter (TWC) -G131-, item 10
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Erase DTC memory of Engine Control Module (ECM), Diagnostic mode 4: Reset/erase diagnostic data.
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Generate readiness code. Refer to "Monitors, Trips and/or Drive Cycle/Readiness Code, Generating". See: Testing and Inspection/Monitors,
Trips, Drive Cycles and Readiness Codes