Ford C-Max 2017 — technical service bulletin
Bulletin TSB 17-2072 · NHTSA communication 10109002 · issued Apr 21, 2017
Technical service bulletin
communication type
Engine
component
2017
model years
3
vehicle entries
Official summary
Some 2017 C-MAX/Fusion Hybrid/Energi and MKZ Hybrid vehicles may exhibit an illuminated MIL with DTC P0071 stored in the powertrain control module (PCM). This DTC can be set after the vehicle is stored inside a warm location for several hours and then driven on a cold day. Under these conditions the PCM may see a temperature sensor concern when it first compares the ambient air temperature (AAT) sensor to other engine temperature sensors and set the DTC. Reprogram the PCM to the latest calibration using Integrated Diagnostic System (IDS) release 104.04 or higher. Make sure you are connected to
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.