WenmarOpen by Wenmar Pro

Service bulletin TT 01 18 14

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10161175
Published by NHTSA2019-06-11
Manufacturer's numberTT 01 18 14
Manufacturer's date2019-06-11
NHTSA componentEQUIPMENT; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV); EQUIPMENT ADAPTIVE/MOBILITY

NHTSA's summary

Alternative diagnosis for lean fuel trim.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Engine, Equipment and accessories, Exhaust and emissions, Crankcase ventilation (PCV)

Vehicles listed
VOLKSWAGEN BEETLE2013, 2014, 2015, 2016, 2017, 2018
VOLKSWAGEN BEETLE CONVERTIBLE2013, 2014, 2015, 2016, 2017, 2018 (the catalog's model; the bulletin names a series or trim of it)
VOLKSWAGEN GOLF2013, 2014, 2015, 2016, 2017, 2018
VOLKSWAGEN JETTA2013, 2014, 2015, 2016, 2017, 2018
VOLKSWAGEN JETTA SPORTWAGEN2013, 2014
VOLKSWAGEN PASSAT2013, 2014, 2015, 2016, 2017, 2018

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
Timing Chain Cla2018-12-03. Service bulletin. Timing Chain Class Action Update
TT 27-15-012017-10-31. Service bulletin. Tech Tips: No Crank, No Start After Cold Soak
V011508 20401712017-10-31. Service bulletin. Technical Bulletin: This document refers to the camshaft adjuster control valve which may stick causing camshaft position faults. This document contains the trouble shooting codes in order to service this issue
TT 01-15-072016-07-07. Service bulletin. Correction to fault code