Golf GLS L4-2.0L (AEG) (2001)
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Check wires between test box and 6-pin connector (to control module) for open circuit according to wiring diagram.
Terminal 1 + socket 70
Terminal 2 + socket 71
Terminal 5 + socket 51
Terminal 6 + socket 52
Wire resistance: max: 1.5 Ohms
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Also check wires for short circuit to B+ and Ground (GND). Specified value: Infinite Ohms
If no malfunctions are found in wires:
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Replace Heated Oxygen Sensor (HO2S) 1 Bank 1 -G39- before catalytic converter, item 5.
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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
Testing and Procedures/With Generic Scan Tool/Diagnostic Mode 4: Reset/Erase Diagnostic Data
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Generate readiness code. See: Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes