Porsche Macan 2017–2018 — technical service bulletin
Bulletin 122-X9C4Z-03 · NHTSA communication 10172031 · issued Feb 25, 2020
Technical service bulletin
communication type
Electrical System
component
2017–2018
model years
2
vehicle entries
Official summary
Instructions for correcting a check engine light with fault P138800 on Macan models. Remedy is to reprogram the engine electronics with software 38.600.020 or higher.
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.