WenmarOpen by Wenmar Pro

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.

By type

By component

By trouble code

By topic

Only bulletins with component: Exhaust and emissions are shown. Show all

Bulletins, newest first
24CX - Dealer Le2018-02-05. 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.
VWoa Dealer Anno2018-02-05. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. This document informs of Volkswagen AG and Audi AG received notice from the US Environmental Protection Agency, US Department of Justice and the California Air Resources Board of an investigation related to emissions compliance matters.
23U4 - Circular2018-02-05. 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.
23U4 - Circular2018-02-05. 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.
23U4 - Circular2018-02-05. 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.
23U4 - Circular2018-02-05. 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.
Update Bulletin2018-02-05. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. Technical Bulletin 26i2 UPDATE - EGR Valve Cover (NVLW): This UPDATE installs a cap onto the EGR valve to prevent a roll pin from falling out. This document gives tips on diagnosis and installation.
V201306 20340722017-12-14. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. Technical Bulletin Activated Charcoal Filter System, Solenoid Valve 1 -N80- (Canister Purge Valve) Diagnosis): Completing the GFF function test and performing a vacuum check on the Canister Purge Valve -N80- are essential to diagnose proper operation and to avoid unnecessary replacements. This document informs how to perform the Diagnosis check
23U4 - Circular2017-12-14. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL; ENGINE AND ENGINE COOLING. 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. Revision Summary Updated loaner/rental instructions.
23U4 - Circular2017-12-14. Service bulletin. ENGINE AND ENGINE COOLING; 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. Revision Summary Updated LOANER claiming instructions.
VSS 17-082017-12-14. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. VSS 17-08 - TDI Monitoring Program - Campaigns 23Q3/23U4/23U3 2.0L Emissions Modification - Gen I, Gen II and Gen III.
TT 23-15-012017-11-08. 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
V241503 20401792017-11-08. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE. Technical Bulletin: This document refers to direction on DTC P2014 Intake Manifold Position Sensor -G336- Replacement, and its fault codes.
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.
QRG - 2014 Passa2017-11-08. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; ENGINE AND ENGINE COOLING; FUEL SYSTEM, GASOLINE. 2014 Volkswagen Passat Quick Reference Specification Book This document is an overview which covers multiple -Engine Codes -Fuel and Air Mixture, Additional Emissions Regulations -Ignition System -Additional Exhaust Regulation -Speed and Idle Control -Control Module and Output Signals -Fuel and Air Ratios Control Module -Ignition System -Additional Emissions Regulations
TT 27-15-012017-10-31. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV). Tech Tips: No Crank, No Start After Cold Soak
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.
DEALER LETTER -2017-06-20. 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.
DEALER LETTER -2017-06-14. 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.
TT 01-15-072016-07-07. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV); ENGINE. Correction to fault code

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