A6 Quattro Wagon V6-3.2L (BKH) (2006)
Oxygen Sensor (O2S) Heater (-Z28-) (bank 2, sensor 1):
Specified value: 1.5 ohms max.
If the specification is not obtained:
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Check the wiring for a short circuit to Battery positive (+) or an open circuit.
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If necessary, repair the wiring connection.
If no malfunctions are detected:
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Replace the Engine Control Module (ECM) (J623). Refer to => [ Engine Control Module, Replacing ] See: Computers and Control
Systems/Engine Control Module/Service and Repair/Engine Control Module, Replacing
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Assembly is performed in the reverse of the removal.
After repair work, the following work steps must be performed in the following sequence:
1. Check the DTC memory. Refer to => [ Diagnostic Mode 03 - Read DTC Memory ] See: Computers and Control Systems/Testing and
Inspection/Scan Tool Testing and Procedures/Diagnostic Modes 01 - 09/Diagnostic Mode 03 - Read DTC Memory.
2. If necessary, erase the DTC memory. Refer to => [ Diagnostic Mode 04 - Erase DTC Memory ] See: Computers and Control Systems/Testing and
Inspection/Scan Tool Testing and Procedures/Diagnostic Modes 01 - 09/Diagnostic Mode 04 - Erase DTC Memory.
3. If the DTC memory was erased, generate readiness code. Refer to => [ Readiness Code ] See: Computers and Control Systems/Testing and
Inspection/Monitors, Trips, Drive Cycles and Readiness Codes/Readiness Code.