Service bulletin B12-042

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)
Type	Service bulletin
NHTSA id	10108422
Published by NHTSA	2017-07-01
Manufacturer's number	B12-042
Manufacturer's date	2017-05-10
NHTSA component	ENGINE AND ENGINE COOLING

NHTSA's summary

"SERVICE BULLETIN - THE OIL CONSUMPTION IS MORE THAN THE CLIENT EXPECTS; THE ENGINE OIL LEVEL IS LOW ON THE DIPSTICK SOONER THAN EXPECTED BASED ON OVERALL VEHICLE USAGE, CONDITION, AND MAINTENANCE HISTORY. IN SOME CASES, THE OIL WARNING LIGHT MAY COME ON."

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

Vehicles listed
ACURA TSX	2011, 2012, 2013

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
B13-006	2019-07-04. Service bulletin. Service Bulletin - American Honda is extending the warranty coverage on the Piston Rings and Pistons for 2009-11 TSX L4 to 8 years from the original date of purchase or 125,000 miles, whichever comes first. The warranty extension does not apply to any vehicle that has ever been declared a total loss or sold for salvage by a financial institution or insurer, or has a branded, or similar tittle under any state's law.
B13-006	2019-01-05. Service bulletin. "Service bulletin - American Honda is extending the warranty coverage on the Piston Rings and Pistons for 2009-11 TSX L4 to 8 years from the original date of purchase or 125,000 miles, whichever comes first. The warranty extension does not apply to any vehicle that has ever been declared a total loss or sold for salvage by a financial institution or insurer, or has a branded, or similar tittle under any state’s law."
BBOM08092018901	2018-09-04. Service bulletin. Dealer message - Today, Acura is notifying dealers of a voluntary noncompliance recall for a small number of Acura vehicles due to an error on the replacement (service part) underhood emissions labels. American Honda previously notified CARB and the EPA for this action.
Service Bulletin	2018-03-05. Service bulletin. Service bulletin - The MIL comes on and DTC P0455 (EVAP system large leak) and/or DTC P0456 (EVAP system very small leak detected) is set. The fuel fill cap (gas cap) may also be loose or have a stick-slip feeling when tightened. The fuel fill cap gasket creates too much friction, preventing the cap from sealing properly.
B13-006	2018-03-05. Service bulletin. Service bulletin - American Honda is extending the warranty coverage on the Piston Rings and Pistons for 2009-11 TSX L4 to 8 years from the original date of purchase or 125,000 miles, whichever comes first. Under certain specific circumstances the engine may create deposits on the oil control rings, which may lead to increased oil consumption.
Service Bulletin	2017-07-31. Service bulletin. Service bulletin - American Honda is extending the warranty coverage on the Piston Rings and Pistons for 2009-11 TSX L4 to 8 years from the original date of purchase or 125,000 miles, whichever comes first. The engine oil level is low on the dipstick, and the oil warning light may come on in rare high oil consumption situations.
DLR MSG - Acura	2017-07-31. Service bulletin. Dealer message - Today, April 2, 2015, American Honda is announcing a warranty extension for some 2009-2011 TSX vehicles for continued high oil consumption after having service bulletin 11-021, Product Update: Software Update to Improve Fuel Injector and VTC Timing performed. To increase client confidence, American Honda is extending the warranty coverage for repairs to 8 years from the original date of purchase or 125,000 miles, whichever comes first.
DLR MSG - Acura	2017-07-17. Service bulletin. Dealer message - Today, April 2, 2015, American Honda is announcing a warranty extension for some 2009-2011 TSX vehicles for continued high oil consumption after having service bulletin 11-021, ProductUpdate:SoftwareUpdatetoImproveFuelInjectorandVTC Timing performed. To increase client confidence, American Honda is extending the warranty coverage for repairs to 8 years from the original date of purchase or 125,000 miles, whichever comes first.
B13-006	2017-06-30. Service bulletin. SERVICE BULLETIN - AMERICAN HONDA IS EXTENDING THE WARRANTY COVERAGE ON THE PISTON RINGS AND PISTONS FOR 2009-11 TSX L4 TO 8 YEARS FROM THE ORIGINAL DATE OF PURCHASE OR 125,000 MILES, WHICHEVER COMES FIRST. UNDER CERTAIN SPECIFIC CIRCUMSTANCES THE ENGINE MAY CREATE DEPOSITS ON THE OIL CONTROL RINGS, WHICH MAY LEAD TO INCREASED OIL CONSUMPTION.
B13-006	2017-06-29. Service bulletin. "SERVICE BULLETIN - AMERICAN HONDA IS EXTENDING THE WARRANTY COVERAGE ON THE PISTON RINGS AND PISTONS FOR 2009-11 TSX L4 TO 8 YEARS FROM THE ORIGINAL DATE OF PURCHASE OR 125,000 MILES, WHICHEVER COMES FIRST. THE WARRANTY EXTENSION DOES NOT APPLY TO ANY VEHICLE THAT HAS EVER BEEN DECLARED A TOTAL LOSS OR SOLD FOR SALVAGE BY A FINANCIAL INSTITUTION OR INSURER, OR HAS A BRANDED, OR SIMILAR TITTLE UNDER ANY STATE’S LAW. TO CHECK FOR VEHICLE ELIGIBILITY, YOU MUST DO A VIN STATUS INQUIRY."