Tuesday, 21 November 2017

******** Audi Q7 Quattro (4LB) V6-3.0L DSL Turbo (CATA) Technical DIAGNOSIS AND REPAIR # 281114 Date: 110120


Engine Controls - Reduced Performance/DTC's P13D3/P13DC



01 DTC Stored Inside Pressure Sensor Cylinder 2 or 5, Range/Performance P13D3, P13DC, Slightly Reduced Performance



28 11 14



2025155/1



January 20, 2011.



AFFECTED VEHICLES



CONDITION



Slightly reduced performance (especially when lower cetane diesel is used). DTC Stored P13D3 (Sensor for internal pressure of cylinder 2



Implausible signal) and/or, P13DC (Sensor for internal pressure of cylinder 5 Implausible signal). These DTCs should not illuminate the MIL.



TECHNICAL BACKGROUND



The cylinder pressure sensors contained within the glow plugs of cylinders 2 and 5 can develop carbon deposits during normal combustion. The



sensors will read incorrectly and set a DTC.



PRODUCTION SOLUTION



Updated software which will automatically clean the pressure sensors via a special heating strategy.



SERVICE



Perform a visual check of the combination glow plug/pressure sensor. Ensure the electrical connection to the affected sensor is in order.



If nothing unusual is found, replace the affected glow plug sensor. See Repair Manual >> Engine >> Fuel Injection and Glow Plug >> 28



Ignition/Glow Plug System >> Removal and Installation.



1. Update the engine control software via SVM action code 01A022. Follow all instructions in the attached TSB 2011732 00 Software Version



Management (SVM), operating instructions.



227



2. Update the engine control module using the SVM action code as listed in the table above if necessary.



WARRANTY



REQUIRED PARTS AND TOOLS



ADDITIONAL INFORMATION



All parts and service references provided in this TSB are subject to change and/or removal. Always check with your Parts Department and service



manuals for the latest information.