A8L Quattro Sedan W12-6.0L (BSB) (2005)
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Check wires for short circuit to B+ and Ground (GND). Specification: infinite ohms
If no malfunction is detected in the wiring:
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Replace respective oxygen sensor:
‹› Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) (G130).
‹› Oxygen Sensor (O2S) 2 Behind Three Way Catalytic Converter (TWC) (G131).
‹› Oxygen Sensor (O2S) 3 Behind Three Way Catalytic Converter (TWC) (G287).
‹› Oxygen Sensor (O2S) 4 Behind Three Way Catalytic Converter (TWC) (G288).
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Erase DTC memory of Engine Control Module => [ Diagnostic Mode 04 - Erase DTC Memory ] See: Testing and Inspection/Scan Tool Testing
and Procedures/Diagnostic Modes 01 - 09, Diagnostic mode 4: Reset/erase diagnostic data.
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Generate readiness code => [ Readiness Code, Generating ] See: Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes.