Passat Syncro Wagon V6-2771cc 2.8L DOHC (AHA) (1998)
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Bank 1, sensor 1.
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Bank 2, sensor 1.
If voltage is OK:
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Replace respective Heated Oxygen Sensor (HO2S).
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Heated Oxygen Sensor -G39- Bank.
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Heated Oxygen Sensor -G108- Bank 2.
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Check readiness code. If Diagnostic Trouble Code (DTC) memory has been erased, or ECM was disconnected, generate new readiness code.
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Scan Tool Testing and Procedures/Output Diagnostic Test
Mode (DTM) (Function 03)
HO2S wiring, bank 1, sensor 1, checking
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Connect VAG1598/22 test box to ECM harness connector.
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Disconnect 4-pin connector (black) for HO2S -G39- (arrow).