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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: Exhaust and emissions are shown. Show all

Bulletins, newest first
VWP13132024-04-22. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. Secondary Air Pressure Sensor Limited Warranty Extension
VWP13052024-04-22. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. Engine Exhaust Flap Limited Warranty Extension
2113022023-10-16. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. Rattling Noises from Engine Compartment Area or Exhaust System
2614012023-07-31. Service bulletin. ENGINE AND ENGINE COOLING; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. MIL ON, DTC P204F Stored, Ad Blue Warning Light XXX Miles to No Restart Displayed
2013062023-07-17. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. Activated Charcoal Filter System, Solenoid Valve 1 -N80- (Canister Purge Valve) Diagnosis
TT 26-19-042019-12-06. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. Diganostic direction to locate exhaust leak
2-0L Gen 2 AEM2019-06-24. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. Email 2.0L Gen 2 AEM Correction
V261902_20284152019-05-06. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; ENGINE AND ENGINE COOLING. Update to labor operation numbers per Saga updates. Also applies to the 2006-2007 Beetle Convertible.
26K42019-04-22. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL; EQUIPMENT. The reductive agent fluid (AdBlue) could contaminate the temperature sensor, causing the Malfunction Indicator Light (MIL) to come on. Additionally, high heat levels can cause the AdBlue fluid to react with the heating fins, causing a variation in internal resistance and the MIL to come on. If the MIL is on, the vehicle will not pass an emissions inspection.
VSS17042019-04-22. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL; ELECTRICAL SYSTEM. Notification of the 2.0l Gen 2, TDI remediation fix monitoring via the VTA system, in alignment with campaigns 23U4.
VSS-17-112019-04-08. Service bulletin. ENGINE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. Volkswagen of America is requesting your cooperation in supplying us with technical information related to the repair process for vehicles on which the TDI Generation II 2.0L emissions modification is being performed ?Campaign 23U4?. Volkswagen will use this information to ensure prompt analysis and resolution of any emerging concerns.
V241709 20451382019-04-08. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE. Update information regarding Top Tier brochure part number andVW literature ordering address
TT 26-12-022019-04-08. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; ENGINE. Tech Tips (AdBlue Level Reset Procedure): This document informs to reset the AdBlue level indicator after filling, use Guided Fault Finding Function/Component selection to perform the SCR system functions test plan, available under Drivetrain > 01 ? CKRA ? Engine ?J623 > 01-systems capable of self-diagnosis > 01 ? Diesel-direct fuel inj. and glow plug system EDC 17 > 01 ? Engine electronics functions. After starting test plan, make selection to "Set reducing agent fill level to full?.
24CX2019-04-08. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. The snow flap in the inlet air box housing may remain partially to fully open. Should this occur, excess warm air could enter the air intake through the snow flap inlet.
23U42019-04-08. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. The Environmental Protection Agency and California Air Resources Board have determined that Volkswagen vehicles equipped with a 2.0L 4-cylinder TDI engine do not comply with applicable emissions regulations. The emissions control systems on the vehicles will not control emissions under off-cycle conditions as effectively as during the federal test procedure. The extent of the emissions increase under off-cycle conditions depends upon how the vehicles are driven.
23U42019-04-08. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. The Environmental Protection Agency and California Air Resources Board have determined that Volkswagen vehicles equipped with a 2.0L 4-cylinder TDI engine do not comply with applicable emissions regulations. The emissions control systems on the vehicles will not control emissions under off-cycle conditions as effectively as during the federal test procedure. The extent of the emissions increase under off-cycle conditions depends upon how the vehicles are driven.
VSS-17-112019-04-08. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. Volkswagen of America is requesting your cooperation in supplying us with technical information related to the repair process for vehicles on which the TDI Generation II 2.0L emissions modification is being performed ?Campaign 23U4?. Volkswagen will use this information to ensure prompt analysis and resolution of any emerging concerns.
VSS 17-042019-04-08. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. Notification of the 2.0l Gen 2, TDI remediation fix monitoring via the VTA system, in alignment with campaigns 23U4.
24CX2019-04-08. Service bulletin. ENGINE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. The snow flap in the inlet air box housing may remain partially to fully open. Should this occur, excess warm air could enter the air intake through the snow flap inlet.
23U42019-04-08. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. The Environmental Protection Agency and California Air Resources Board have determined that Volkswagen vehicles equipped with a 2.0L 4-cylinder TDI engine do not comply with applicable emissions regulations. The emissions control systems on the vehicles will not control emissions under off-cycle conditions as effectively as during the federal test procedure. The extent of the emissions increase under off-cycle conditions depends upon how the vehicles are driven.
23U42019-04-08. Service bulletin. EQUIPMENT; ENGINE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. The Environmental Protection Agency and California Air Resources Board have determined that Volkswagen vehicles equipped with a 2.0L 4-cylinder TDI engine do not comply with applicable emissions regulations. The emissions control systems on the vehicles will not control emissions under off-cycle conditions as effectively as during the federal test procedure. The extent of the emissions increase under off-cycle conditions depends upon how the vehicles are driven.
V011228 20304532019-04-01. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; ELECTRICAL SYSTEM:SOFTWARE. Technical Bulletin (Update Programming for Stored in ECM Fault Memory issues): The MIL ON with NOx Sensor fault P2201 and/or Exhaust Gas Temperature Sensor faults P050E, P2080, P244C and/or P2478 stored in fault memory due to the Diagnostic strategy being to sensitive. The production solution to this issue was Improved software implemented for model year 2013. 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.
V211302 20240612019-04-01. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. Technical Bulletin (Rattling Noises from Engine Compartment Area or Exhaust System): Customers may complain of a rattling noise from engine or exhaust area while accelerating from 1800-3000 RPM. In order to complete proper diagnosis and ensure that the noise is coming from the turbocharger use the procedure in this document.
customer letter2019-03-04. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. 23Z3 pre-notification_customer
Final Months of2018-12-10. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. Email_Important TDI Announcement - Final Months of 2.0L Claims Program_VW

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