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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: Engine are shown. Show all

Bulletins, newest first
V001413 20338462017-11-08. Service bulletin. ENGINE. Technical Bulletin (Fuel Additive to Help Prevent Sporadic Misfire Faults): Fuel quality impacts the operating performance, efficiency and service life of the engine. The use of poor quality fuels may result in deposit build up on the fuel injectors and intake valves. This may result in a rough running condition, sporadic misfires, or cold start misfire faults storing in the ECM fault memory. This document informs a Volkswagen approved fuel additive is available to help remove and prevent deposits on fuel injectors and intake valves.
V011423 20340122017-11-08. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE. Technical Bulletin (Manifold Absolute Pressure Range / Performance issues): This document informs that the monitoring strategy for the manifold absolute pressure sensor being too sensitive, causing P0106 to incorrectly set in the engine control module. The product solution for this issue was improved software.
V281401 20321162017-11-08. Service bulletin. ELECTRICAL SYSTEM; ENGINE. Technical Bulletin (Incorrect Glow Plug Faults): During the initial glow phase, after switching the ignition ?On?, the ECM performs a check of the glow plugs through the glow plug control module, to ensure the correct glow plugs are installed. If the engine is cranked during this check, lowering the system voltage, the ECM may receive an incorrect reading and set incorrect glow plug faults. 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.
V011401 20286092017-11-08. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; ENGINE. Technical Bulletin (Update Programming for Engine Control Module and Transmission Control Module, for Shudder and/or Slight Hesitation Concerns): The current ECM/TCM programming could be causing slight hesitation related concerns in DSG equipped vehicles. The updated software of the product solution Improved ECM/TCM software to address drivability concerns and slight hesitation complaints. 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.
V001401 20338462017-11-08. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:OTHER FUEL TYPES:TURBO/SUPERCHARGER. Technical Bulletin (Fuel Additive to Help Prevent Sporadic Misfire Faults): Fuel quality impacts the operating performance, efficiency and service life of the engine. The use of poor quality fuels may result in deposit build up on the fuel injectors and intake valves. This may result in a rough running condition, sporadic misfires, or cold start misfire faults storing in the ECM fault memory. A Volkswagen approved fuel additive is available to help remove and prevent deposits on fuel injectors and intake valves. 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.
V921503 20373222017-11-08. Service bulletin. ENGINE. Technical Bulletin (Washer Level Sensor issues): The sensitivity of the washer solvent level sensor (G33) can be affected by the type, concentration, and the presence of additives in the washer solvent currently in the tank. The operation of the level sensor relies on the composition of the solvent to provide an accurate message on the solvent level. Incorrect concentration and the presence of additives can contaminate the sensor and reduce its sensitivity. This document discusses the diagnosis, and potential remedy of the issue.
Revised_Oil_Capa2017-11-03. Service bulletin. EQUIPMENT; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ENGINE. Job Aid ? VW Engine Oil Capacities (Gasoline, Diesel, Hybrid Engines)
V151403 20321732017-10-31. Service bulletin. ENGINE. Technical Bulletin (Camshaft Adjustment Valve 1 -N205- Diagnosis): Completing the GFF function test and performing basic settings on the camshaft adjustment valve are essential to diagnose proper operation and to avoid unnecessary replacements. The production solution to this issue was to optimized engine cleaning procedure in production.
V191401 20225492017-10-31. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. Technical Bulletin (Electric Coolant Fans Continue to Run after Ignition is Switched OFF): This documentation informs it is considered normal operation for the electric coolant fans to continue to run for up to 15 minutes after the ignition is switched off in gasoline engine applications, and up to 16 minutes in diesel engine applications. The production solution to service this issue is that no production change is required.
TT 19-13-022017-10-31. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY; ENGINE AND ENGINE COOLING:COOLING SYSTEM. Tech Tips (2.0L CCTA/CBFA Coolant Leak or Repeat Coolant Leak from the Water Pump Area): Inspect the water pump for signs of contact with engine oil. Engine oil may cause the water pump gasket to swell, which may lead to a coolant leak. This document informs of the precaustions necessary if a water pump replacement is necessary.
TT 23-10-022017-10-31. Service bulletin. ENGINE. Tech Tips (Common Rail TDI ? Fuel Filter Replacement and Prime/Bleed Procedure): This document informs when replacing fuel system components on the Common Rail TDI engine (including the fuel filter), the fuel system must be primed. The procedure should be available on most models through Guided Functions. If not shown, then access through Control Module OBD. Run ?Basic Settings block 35? three times in a row. This activates the electric fuel pumps and bleeds the fuel system. Once the system has been bled, it will be necessary to start the engine and idle for a minimum of 5 minutes before depressing the gas pedal.
V211503 20361102017-10-31. Service bulletin. ENGINE. Technical Bulletin (Engine Lacks Performance, Shaft of Turbine Fan of Turbo Charger Broken or Seized): Document discusses diagnosis Codes necessary to diagnosis, and potential remedy of engine performance issue. The diagnosis codes for checking warranty coverage for servicing the vehicle are also available
TT 27-13-012017-10-31. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:BELTS AND ASSOCIATED PULLEYS. Tech Tips: Generator Charging Concern Diagnosis Tip - One Way Clutch Pulley Testing
V191601 20225492017-10-31. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. Tech Bullentin concerning Electric Coolant Fans that Continue to Run after Ignition is Switched OFF
TT011703 20476702017-10-25. Service bulletin. ENGINE AND ENGINE COOLING. Steps to address false misfire indication
V171404 20128552017-10-21. Service bulletin. ENGINE. Technical Bulletin (Engine Oils Which Meet Volkswagen Oil Quality Standard): This document informs of a sample list of products generally available in the North American market that meet the Volkswagen Oil Quality Standard
VWP-14-042017-10-21. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. Warranty Information (Turbocharger Limited Warranty Extension): Volkswagen has extended the Emissions Control Systems Warranty for the turbocharger under specific conditions to 10 years or 120,000 miles, whichever occurs first, from the vehicle?s original in-service date, for certain 2012 ? 2013 Model Year Volkswagen Passat TDI Clean Diesel Engine vehicles. Volkswagen has determined that, under specific conditions, the turbocharger could malfunction and may cause the Malfunction Indicator Lamp (MIL) on the instrument cluster to illuminate due to the presence of specific fault codes caused by this component. Additionally, you may hear noise coming from the turbocharger.
V211405 20361102017-10-21. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. Technical Bulletin (Engine Lacks Performance, Shaft of Turbine Fan of Turbo Charger Broken or Seized): In the case of a damaged turbocharger it is important to follow the steps contained in this document to avoid repeat repairs. 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.
V011413 20357582017-10-21. Service bulletin. ENGINE. Technical Bulletin (Knock Sensor Fault): This document informs of imperfections in the engine wiring harness. The product solution for this issue was Improvements made to engine harness. It also contains graphics for the updated harness routing, 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.
V271701_20339782017-10-21. Service bulletin. ENGINE; ELECTRICAL SYSTEM. Update existing technical bulletin to include model year 2017 applicability.
DEALER LETTER -2017-06-28. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. THIS DEALER LETTER GIVES AN UPDATE ON THE CURRENT EMISSIONS ISSUES WITH REGARDS TO 2.0L TDI VEHICLES.
TDI EMISSIONS SE2017-06-27. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. THIS COMMUNICATION INFORMS OF THE TDI EMISSIONS SETTLEMENT AGREEMENT WITH REGARDS TO 2.0L TDI VEHICLES.
VIN-4-A-PIN APRI2017-06-26. Service bulletin. STEERING; FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP; ENGINE; EQUIPMENT:APPLIANCE:AIR CONDITIONER; VISIBILITY:GLASS, SIDE/REAR; FUEL SYSTEM, OTHER:STORAGE:FUEL GAUGE SYSTEM; POWER TRAIN:CLUTCH ASSEMBLY:PEDAL/HAND LEVER(MOTORCYCLE); SUSPENSION; ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER; AIR BAGS; EQUIPMENT:ELECTRICAL; STRUCTURE:BODY:ROOF AND PILLARS. MIL-ON, FAULT P309F OR P309D, NO ELECTRIC DRIVE MODE CUSTOMER STATES CRANK NO START AND/OR IN-TANK FUEL PUMP MAKING NOISE AND POSSIBLY WITH FUEL PUMP FAULTS MIL-ON, FAULT P013E IN THE ECM MIL-ON, FAULT P164B IN ECM MIL-ON, FAULT P0011 AND/OR P0016 IN THE ECM MIL-ON, FAULT P2407 IN THE ECM CUSTOMER STATES NOISE FORM THE ENGINE/TURBO CUSTOMER STATES THE FUEL GAUGE DOES NOT READ FULL MIL ON, FAULT P2181 IN THE ECM MIL-ON, FAULT P0456 IN THE ECM CUSTOMER STATES THERE IS A NOISE WHILE TURNING/ GOING OVER BUMPS VEHICLE ALIGNMENT NOT CORRECT, STEERING OFF CENTER, PULLS, DRIFTS, DURING PDI CLUTCH PEDAL SQUEAL/SQUEAK WHEN OPERATING CLUTCH PEDAL CUSTOMER STATES THE A/C SYSTEM DOES NOT PERFORM PROPERLY CUSTOMER STATES INTERIOR "A" PILLAR TRIM IS LOOSE CUSTOMER STATES WIND NOISE FROM DRIVERS DOOR/WINDOW GUIDE CUSTOMER STATES AIRBAG LIGHT IS ON ANY KEY FUNCTIONS (INCLUDING STARTING, KESSY, REMOTE BUTTONS)
VIN-4-A-PIN APRI2017-06-23. Service bulletin. EQUIPMENT:ELECTRICAL; POWER TRAIN:CLUTCH ASSEMBLY:PEDAL/HAND LEVER(MOTORCYCLE); FUEL SYSTEM, OTHER:STORAGE:FUEL GAUGE SYSTEM; EQUIPMENT:APPLIANCE:AIR CONDITIONER; SUSPENSION; AIR BAGS; FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP; VISIBILITY:SUN/MOON ROOF ASSEMBLY; ENGINE; VISIBILITY:POWER WINDOW DEVICES AND CONTROLS; ELECTRICAL SYSTEM:STARTER ASSEMBLY. MIL-ON, FAULT P309F OR P309D, NO ELECTRIC DRIVE MODE CUSTOMER STATES CRANK NO START AND/OR IN-TANK FUEL PUMP MAKING NOISE AND POSSIBLY WITH FUEL PUMP FAULTS MIL-ON, FAULT P013E IN THE ECM MIL-ON, FAULT P164B IN ECM MIL-ON, FAULT P0011 AND/OR P0016 IN THE ECM MIL-ON, FAULT P0011 AND/OR P0016 IN THE ECM MIL-ON, FAULT P0011 AND/OR P0016 IN THE ECM MIL-ON, FAULT P2407 IN THE ECM CUSTOMER STATES THE FUEL GAUGE DOES NOT READ FULL MIL ON, FAULT P2181 IN THE ECM MIL-ON, FAULT P0456 IN THE ECM CUSTOMER STATES THERE IS A NOISE WHILE TURNING/ GOING OVER BUMPS VEHICLE ALIGNMENT NOT CORRECT, STEERING OFF CENTER, PULLS, DRIFTS, DURING PDI CLUTCH PEDAL SQUEAL/SQUEAK WHEN OPERATING CLUTCH PEDAL CUSTOMER STATES THE A/C SYSTEM DOES NOT PERFORM PROPERLY CUSTOMER STATES WIND NOISE FROM DRIVERS DOOR/WINDOW GUIDE WATER LEAK FROM SUNROOF/HEADLINER, WATER STAINS ON HEADLINER CUSTOMER STATES AIRBAG LIGHT IS ON ANY KEY FUNCTIONS (INCLUDING STARTING, KESSY, REMOTE BUTTONS)
VWS-15-012017-06-23. Service bulletin. EQUIPMENT; ENGINE. THIS COMMUNICATION INFORMS DEALERS OF THE WARRANTY CLAIM CODING FOR 30-DAY INVENTORY MAINTENANCES ON 2.0L AND 3.0L TDI VEHICLES.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.