News Technical Service Bulletins

Audi Fuel Level Update

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This bulletin applies to 2015-2017 Audi A8 vehicles equipped with a 3.0L engine.

This bulletin applies to 2015-2017 Audi A8 vehicles equipped with a 3.0L TFSI engine. The warning light might be on accompanied by diagnostic trouble code (DTC) P046100 (fuel level sensor circuit range/performance). This DTC can be caused by miscalculations within the engine control module (ECM) software when the vehicle is being fueled with gasoline when the ignition is on. New ECM software has been implemented to correct this condition. Check the vehicle’s ECM software part number/version prior to the update. If the software has already been updated, replace the respective fuel sensor only.

Update the ECM, J623 (address word 0001) using the support vector machines (SVM) action code 01A203 (old and new software P/N 4H2907551A; old version 0001/0003/0004; new version 0008; SVM code input 01A203).

After SVM update, cycle the ignition.

Start the engine. If the engine runs rough and then surges, cycle the ignition once again.

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