Service bulletin 11-150-14R

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	10093101
Published by NHTSA	2017-02-27
Manufacturer's number	11-150-14R
Manufacturer's date	2015-09-10
NHTSA component	ENGINE; ELECTRICAL SYSTEM:SOFTWARE

NHTSA's summary

"NOTE: THE INFORMATION IN THIS BULLETIN WAS ORIGINALLY PART OF TSB 11-149-14 BUT HAS BEEN SEPARATED OUT INTO THIS PUBLICATION TO SIMPLIFY APPLICABILITY AND THE CORRESPONDING SERVICE PROCEDURE. THIS BULLETIN ANNOUNCES THE AVAILABILITY OF REPROGRAMMING FILES TO OPTIMIZE THE ECM LOGIC FOR ENGINE OIL LEVEL DETECTION IN THE EVENT OF FALSE OR PREMATURE LOW ENGINE OIL LEVEL WARNING LAMP ILLUMINATION. SHOULD A CUSTOMER PRESENT A CONCERN WITH A LOW ENGINE OIL WARNING LAMP ILLUMINATION AND THE DIAGNOSIS INDICATE THE OIL LEVEL IS FULL OR NEARLY FULL (OIL LEVEL BETWEEN THE FULL AND ADD MARKS/HOLES ON THE DIPSTICK) AND THE CUSTOMER HAS NOT ADDED ANY ENGINE OIL, THE ECM MUST BE UPDATED WITH THIS NEW LOGIC. NOTE: ON 5MT MODELS ONLY, THE OIL LEVEL SWITCH MUST ALSO BE REPLACED. IF THE CUSTOMER HAS ADDED OIL, DETERMINE HOW MUCH WAS ADDED. BASED UPON THE INFORMATION PROVIDED, ESTIMATE WHERE THE OIL LEVEL WAS WHEN THE LAMP ILLUMINATED IN ORDER TO DETERMINE IF ANY ADDITIONAL ACTION IS REQUIRED BEYOND WHAT IS DESCRIBED IN THIS BULLETIN (E.G AN OIL CONSUMPTION TEST). REMINDER: ALWAYS CONFIRM ANY LOW OIL LEVEL LAMP FALSE ILLUMINATION IS NOT A RESULT OF A POOR ELECTRICAL CONNECTION OR GROUNDING CONCERN. INSPECT THE CIRCUIT FOLLOWING THE DIAGNOSIS FOUND IN THE APPLICABLE SERVICE MANUAL TO ENSURE NO OTHER RELATED CONCERN EXISTS."

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

Electrical system, Engine, Software

Vehicles listed
SUBARU IMPREZA	2012

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
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11-149-14	2017-03-03. Service bulletin. REPROGRAMMING FILE AVAILABILITY FOR OIL LEVEL DETECTION
02-132-12R	2017-01-31. Service bulletin. THIS BULLETIN PROVIDES A PROCEDURE FOR DIAGNOSIS AND DETERMINATION OF NECESSARY PART REPLACEMENT IN THE EVENT ANY OF THE “AVCS SLOW RESPONSE” OR “AVCS SYSTEM FAILURE” DTCS LISTED ABOVE ARE FOUND TO BE STORED IN THE ECM MEMORY. A POSSIBLE CAUSE OF THESE CONDITIONS IS CONTAMINATION WITHIN THE CAMSHAFT SPROCKET AND / OR OIL CONTROL SOLENOID VALVE (OCV) MECHANISM.
11-156-15	2017-01-10. Service bulletin. THIS BULLETIN ANNOUNCES AVAILABILITY OF REPROGRAMMING FILES FOR OPTIMIZING THE ECM TO ADDRESS CUSTOMER CONCERNS OF EXTENDED ENGINE CRANKING TIME BEFORE THE ENGINE STARTS.
06-48-15	2017-01-10. Service bulletin. THIS BULLETIN ANNOUNCES A DESIGN CHANGE TO THE STOP LIGHT SWITCH TO REDUCE THE POSSIBILITY OF IMPROPER ILLUMINATION OF THE ABS AND/OR VDC WARNING LAMP WITH RESULTING DTCS C1531 AND/OR C0054. DETAILS OF THE SWITCH CHANGES ARE SHOWN IN THE ILLUSTRATION BELOW.
02-132-12R	2016-11-03. Service bulletin. THIS BULLETIN PROVIDES A PROCEDURE FOR DIAGNOSIS AND DETERMINATION OF NECESSARY PART REPLACEMENT IN THE EVENT ANY OF THE “AVCS SLOW RESPONSE” OR “AVCS SYSTEM FAILURE” DTCS LISTED ABOVE ARE FOUND TO BE STORED IN THE ECM MEMORY. A POSSIBLE CAUSE OF THESE CONDITIONS IS CONTAMINATION WITHIN THE CAMSHAFT SPROCKET AND / OR OIL CONTROL SOLENOID VALVE (OCV) MECHANISM.