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Service bulletins for the 2014 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.

1567 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
2113022023-10-16. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. Rattling Noises from Engine Compartment Area or Exhaust System
2013062023-07-17. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. Activated Charcoal Filter System, Solenoid Valve 1 -N80- (Canister Purge Valve) Diagnosis
Action24DR2023-05-22. Service bulletin. BACK OVER PREVENTION:SOFTWARE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. Emissions service action 24DR/ECM Software.
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
TT 01 18 142019-06-11. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV); EQUIPMENT ADAPTIVE/MOBILITY. Alternative diagnosis for lean fuel trim.
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
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.
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
23Z32019-03-04. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. Emissions Service Action 23Z3 / Improved Post-AEM Engine Control Module Software (AEM-C)
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
Emissions Servic2018-12-10. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. 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.
Emissions Servic2018-12-10. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL; EQUIPMENT ADAPTIVE/MOBILITY. 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.
SM 59-20172018-09-17. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. This special notice is to inform dealers to return all part numbers listed in the document. Only superseded part numbers to be ordered going forward.

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