Service bulletins for the 2012 Volkswagen Passat
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
1572 on file from NHTSA, as of 2026-10-19.
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Only bulletins with component: Fuel system are shown. Show all
| V011232 2031341 | 2019-04-01. Service bulletin. EQUIPMENT; FUEL SYSTEM, GASOLINE; FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY. Technical Bulletin (DTC P0441 Stored in the Engine Control Module): Production tolerance in Diagnostic Module Tank Leakage (DMTL) pump could cause a false flow reading. The production solution to this issue is updated DMTL pumps as of pumps? production date September 2012. This document discusses the "Fault Codes" necessary to diagnosis, and potential remedy of the issue. The fault codes for checking warranty coverage for servicing the vehicle are also available. |
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| On-Car Analysis | 2019-04-01. Service bulletin. FUEL SYSTEM, OTHER:STORAGE:FUEL GAUGE SYSTEM. On-car analysis list of Customer Complaints: Fuel gauge doesn't read full when the fuel tank is |
| V011231 2023591 | 2019-04-01. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:DIESEL; FUEL SYSTEM, DIESEL. Technical Bulletin (TDI Clean Diesel I/M (Inspection Maintenance) Testing Issues due to Readiness Not Set): Some readiness codes on TDI clean diesel vehicles require special driving conditions to be set. If DTCs have been recently erased from the vehicle?s ECM, it may take additional driving under different conditions to fully set OBD readiness parameters. MVB 89 (on non-UDS protocol ECM?s) will store correct data concerning OBD readiness. This document illustrates how to manually read OBD readiness codes. |
| TT 26-13-03 | 2019-04-01. Service bulletin. FUEL SYSTEM, DIESEL; ENGINE AND ENGINE COOLING. Tech Tips (CBEA, CJAA, CKRA engine codes DPF replacement and/or DTCS P2413, P2463): This document informs of the use of aftermarket air filters such as cotton bed steel mesh or cone style, can cause the MAF sensor to not read accurately, affecting vehicle performance and critical monitoring functions for the diesel particulate filter. This can also result in premature DPF failure. Only use factory air filters. The use of aftermarket air filters is not supported as the system was designed and calibrated to work with factory air filters. |
| TT 21 18 01 | 2018-12-10. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER; ENGINE AND ENGINE COOLING:ENGINE:OTHER FUEL TYPES:TURBO/SUPERCHARGER; FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS. Incorrect removal of Turbocharger oil feed line may cause engine damage |
| Customer Letter | 2018-04-23. Service bulletin. FUEL SYSTEM, DIESEL. Warranty Extension for High-Pressure Fuel Pump Certain 2009-2012 Model Year Volkswagen Touareg TDI® Clean Diesel Engine Vehicles & Certain 2012 Model Year Volkswagen Passat TDI® Clean Diesel Engine Vehicles. This warranty extension covers the diagnosis and replacement of the high-pressure fuel pump only if the correct, uncontaminated fuel is present in your vehicle. |
| Customer Letter | 2018-04-02. Service bulletin. FUEL SYSTEM, DIESEL. Warranty Extension for High-Pressure Fuel Pump: Volkswagen informed customers of a decision to extend the warranty for the high-pressure fuel pump (HPFP) in the TDI® Clean Diesel engine vehicle under specific conditions to 10 years or 120,000 miles, whichever occurs first, from the vehicle's original in-service date. |
| Dealer Letter - | 2018-02-05. Service bulletin. FUEL SYSTEM, DIESEL; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. VOLKSWAGEN DEALERSHIP COMMUNICATION: Volkswagen announced a warranty extension program to cover the High Pressure Fuel Pump on 2009-2012 model year TDI Clean Diesel Engine vehicles |
| WECF HPFP WEXT | 2018-02-05. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; FUEL SYSTEM, DIESEL. VOLKSWAGEN DEALERSHIP COMMUNICATION: This document announced a warranty Volkswagen extension program to cover the High Pressure Fuel Pump on 2009-2012 model year TDI Clean Diesel Engine vehicles. |
| TT 20-16-01 | 2018-02-05. Service bulletin. FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY:FILLER PIPE AND CAP. Document informs how to check the fuel filler neck for blockage, and how to clean the part. |
| V201305 2031426 | 2017-12-14. Service bulletin. FUEL SYSTEM, GASOLINE. Technical Bulletin (High Pressure Fuel Pump Diagnosis): Completing the GFF high pressure pump function test is essential to diagnose proper pump operation and to avoid unnecessary replacements. This document informs how to perform the diagnostic. This document discusses the "Fault Codes" necessary to diagnosis, and potential remedy of the issue. The fault codes for checking warranty coverage for servicing the vehicle are also available. |
| V551302 2033945 | 2017-12-14. Service bulletin. FUEL SYSTEM, GASOLINE. Technical Bulletin (Fuel Door Sticks or is Difficult to Open): Fuel door binding due to excess material inside of fuel door housing. The production solution to this issue was a part change to eliminate excess material inside of fuel door housing. |
| TT 011503 | 2017-12-14. Service bulletin. FUEL SYSTEM, GASOLINE. Update to expand fuel testing for lean DTCS. |
| Dealer Letter - | 2017-12-14. Service bulletin. FUEL SYSTEM, OTHER. VOLKSWAGEN DEALERSHIP COMMUNICATION (Upcoming Communication to Owners of 2009-2013 MY Volkswagen TDI Clean Diesel Engine Vehicles Registered in the State of Illinois - Using Biodiesel Fuel Blends): Due to Illinois state tax incentives for biofuels, biodiesel blends of B5 or less may not be available in the State of Illinois. Volkswagen will continue to honor the terms and conditions of Volkswagen Limited Warranties that came with these vehicles. |
| TT 20-09-06 | 2017-12-05. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER; FUEL SYSTEM, DIESEL. Tech Tips (TDI Engine - N75 Solenoid Valve Diagnosis): This document informs with graphical aid the testing of the N75 Solenoid Valve in the event of a turbocharger fault code such as P0299 or P0234. This applies to Mechanical Injection Style Diesel Engines, Pumpe Duse Style Diesel Engines and the new Common Rail Style Diesel Engines. |
| V231605_2041057 | 2017-11-14. Service bulletin. FUEL SYSTEM, GASOLINE. Updated to remove redundant Touareg fuel seneor part number (sensor now comes with fuel line). |
| V231506 2041057 | 2017-11-08. Service bulletin. FUEL SYSTEM, DIESEL. Technical Bulletin (Fuel Rail/System Pressure, and Fuel Rail Pressure Sensor issues): When diagnosing the condition above on a common rail diesel vehicle, if no root cause is found after checking all other components and all GFF diagnostic procedures have been performed, it may be necessary to check for metallic particles in the High Pressure Fuel Pump. This document contains a deeper procedure, and part table numbers. Also this document contains the method to diagnose, and to service this issue |
| V011518 2023591 | 2017-11-08. Service bulletin. FUEL SYSTEM, DIESEL; ELECTRICAL SYSTEM. Technical Bulletin (TDI Clean Diesel I/M (Inspection Maintenance) Testing Issues due to Readiness Not Set): A Volkswagen TDI clean diesel is not ready for I/M (Inspection Maintenance) testing due to readiness codes not being fully set. Some readiness codes on TDI clean diesel vehicles require special driving conditions to be set. This document contains how to read the OBD readiness codes to diagnosis the status of the car, and gives examples on what is necessary to have the car up to spec |
| V201503 2031426 | 2017-11-08. Service bulletin. ELECTRICAL SYSTEM; ENGINE; FUEL SYSTEM, GASOLINE. Technical Bulletin: High Pressure Fuel Pump Diagnosis. Completing the GFF high pressure pump function test is essential to diagnose proper pump operation and to avoid unnecessary replacements. This document contains the procedure to update the programming on the diagnostic hardware. This document contains the fault codes necessary to check the warranty coverage for servicing this issue. |
| V231502 2041057 | 2017-11-08. Service bulletin. FUEL SYSTEM, DIESEL; ELECTRICAL SYSTEM. Technical Bulletin (No Start, or Rough Running issues): When diagnosing the condition(No Start, or Rough Running) on a common rail diesel vehicle, if no root cause is found after checking all other components and all GFF diagnostic procedures have been performed, it may be necessary to check for metallic particles in the High Pressure Fuel Pump using the service section of this document. |
| TT 23-15-01 | 2017-11-08. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; FUEL SYSTEM, GASOLINE. Tech Tips (Exhaust Gas Recirculation System Performance issues): After replacing the mass air flow sensor basic setting must be reset. This document informs of the procedure necessary to perform the reset |
| VWP-15-06 | 2017-11-08. Service bulletin. FUEL SYSTEM, DIESEL. Warranty Information (Policies and Procedures Bulletin): Volkswagen has extended the warranty for the high-pressure fuel pump (HPFP) under specific conditions to 10 years or 120,000 miles, whichever occurs first, from the vehicle's original in-service date, for certain 2009 - 2012 Model Year (MY) Volkswagen TDI® Clean Diesel Engine vehicles |
| V201502 2031426 | 2017-11-08. Service bulletin. FUEL SYSTEM, GASOLINE; ELECTRICAL SYSTEM; ENGINE. Technical Bulletin (High Pressure Fuel Pump Diagnosis): Completing the GFF high pressure pump function test is essential to diagnose proper pump operation and to avoid unnecessary replacements |
| TT 01-14-01 | 2017-11-08. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; FUEL SYSTEM, GASOLINE. Tech Tips (Lean Fuel Trim Readings): This document informs on the procedure to diagnose for issues with excess fuel trim, and what needs to be serviced |
| V231508 2041057 | 2017-11-08. Service bulletin. FUEL SYSTEM, DIESEL. Technical Bulletin (Fuel Rail/System issues): When diagnosing the condition above on a common rail diesel vehicle, if no root cause is found after checking all other components and all GFF diagnostic procedures have been performed, it may be necessary to check for metallic particles in the High Pressure Fuel Pump using this documents service section informs of the procedure |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.