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Service bulletin 18-084-17

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)
TypeService bulletin
NHTSA id10121800
Published by NHTSA2017-11-03
Manufacturer's number18-084-17
Manufacturer's date2017-09-16
NHTSA componentPOWER TRAIN; ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC); POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM

NHTSA's summary

Flash: Powertrain Diagnostic and System Enhancements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that the following DTCs have been set:P1D7F-00 - ETC Self-Learning Failure. P1523-00 - VVA Low Oil Pressure. P1524-00 - Oil Pressure Out Of Range - Camshaft Advance/Retard Disabled. P0141 - O2 Sensor 1/2 Heater Performance. P1046 - Cylinder 1 Oil Supply Solenoid Valve Overcurrent. P1048 - Cylinder 2 Oil Supply Solenoid Valve Overcurrent. P104A - Cylinder 3 Oil Supply Solenoid Valve Overcurrent. P104C - Cylinder 4 Oil Supply Solenoid Valve Overcurrent. Customers may also notice the following symptom:Crank no start condition in extreme cold temperatures of -20°C (-4°F) partially due to the available fuel blend conditions.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Driver assistance, Electrical system, Transmission and driveline, Automatic transmission, Transmission control module

Trouble codes named

P0141, P1046, P1048, P104A, P104C, P1523, P1524, P1D7F

Vehicles listed
FIAT 500L2015

Listing a model year does not mean every vehicle of it is concerned: the document says which.