Nissan Sentra 2018 — technical service bulletin
Bulletin NTB18-044 · NHTSA communication 10143488 · issued Jun 19, 2018
Technical service bulletin
communication type
Engine and Engine Cooling
component
2018
model years
1
vehicle entries
Official summary
VOLUNTARY EMISSIONS SERVICE CAMPAIGN 2018 SENTRA SR AND NISMO; ECM REPROGRAMMING This bulletin applies only to vehicles equipped with SR or Nismo trim level packages. INTRODUCTION Nissan is conducting this voluntary emissions service campaign on certain specific model year 2018 Sentra Turbo SR and Sentra NISMO vehicles. The Engine Control Module (ECM) will be reprogrammed so that in the event of an engine coolant bypass (Multiway coolant flow Control Valve or MCV) diagnostic issue that properly illuminates a Malfunction Indicator Light (MIL), the software can also accurately determine when the
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.