A8L Quattro Sedan W12-6.0L (BSB) (2005)
If no malfunction can be detected at sensor wheel:
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Replace Engine Speed (RPM) Sensor (G28).
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Erase DTC memory of Engine Control Module (ECM) => [ Diagnostic Mode 04 - Erase DTC Memory ] See: Powertrain Management/Computers
and Control Systems/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: Powertrain Management/Computers and Control Systems/Testing and
Inspection/Monitors, Trips, Drive Cycles and Readiness Codes.
If no malfunction is found in the wires and there was no voltage between terminals 1 + 3:
If no malfunction is detected in the wiring, replace the engine control module.