WenmarOpen by Wenmar Pro

Service bulletin NTB12-040

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 id10043941
Published by NHTSA2012-05-02
Manufacturer's numberNTB12-040
Manufacturer's date2012-06-28
ReplacesNTB-12-040-C
NHTSA componentENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE

NHTSA's summary

NISSAN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. RECALL CAMPAIGN. SOME VEHICLES ARE EQUIPPED WITH AN IMPROPERLY CALIBRATED ENGINE CONTROL MODULE (ECM) THAT MAY INCORRECTLY DETECT ENGINE VALVE CLOSURE AS ENGINE KNOCK. *JS UPDATED 5/16/12. *PE UPDATED 5/30/12. *PE UPDATED 7/3/12. *PE

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Engine, Exhaust and emissions, Exhaust manifold, pipes and muffler

Vehicles listed
NISSAN ALTIMA2010

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
NTB12120A2021-05-10. Service bulletin. SERVICE INFORMATION When an exhaust manifold and three way catalyst assembly is removed from an applied vehicle for any reason: 1. Remove and discard the exhaust manifold stay and its related parts. 2. The upper and lower exhaust manifold covers (heat shields) may need to be replaced. - Refer to the FLOW CHART on page 3 for detailed vehicle applicability. See this bulletin for further detail.
NTB-12-120-A2014-11-14. Service bulletin. NISSAN: INFORMATION PROVIDED REGARDING REMOVAL OF THREE WAY CATALYST AND EXHAUST MANIFOLD SERVICE AND REPLACEMENT, IF NEEDED, OF UPPER/LOWER (HEAT SHIELD) EXHAUST MANIFOLD COVERS. MODEL 20007-10 SEDAN/COUPE, 2007-11 HYBRID. *PE