A8 Quattro Sedan V8-4.2L (BGK) (2006)
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Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) (G130), bank 1, with Oxygen Sensor (O2S) Heater 1 (Z29).
Oxygen Sensor (O2S) 2 Behind Three Way Catalytic Converter (TWC) (G131), bank 2, with Oxygen Sensor (O2S) Heater 2 (Z30).
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Repair open circuit in wiring or short circuit if necessary.
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If wire connection is OK but there is no Ground (GND) activation present for oxygen sensor heater, replace Engine Control Module (ECM), refer
to Repair Manual and generate readiness code again => [ Readiness Code, Generating ] See: Powertrain Management/Computers and Control
Systems/Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes.
