May 4, 2019 Service bulletin

Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the Powertrain Control...

Jeep technical service bulletin 18-041-19 for 2018 Jeep Wrangler.

Bulletin number: 18-041-19
Component: Power train: automatic transmission: control module (TCM/PCM/tecm)
Summary: Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the Powertrain Control Module (PCM) with thelatest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or moreof the following DTCs have been set: P0456 - EVAP System Small Leak(APAC&EMEA with Sales Codes NA1 with NBQ or NB6 Only). P0128 - Thermostat Rationality(APAC&EMEA with Sales Codes NA1 with NBQ or NB6 Only). P050B - Cold Start Ignition Timing Performance(APAC&EMEA with Sales Codes NA1 with NBQ or NB6 Only). Customers may experience: Excessive fan noise when the A/C is on MAX output. Rough idle at engine start up in colder ambient temperatures. Software enhancements include:Electric vacuum pump (EVP) update. Fan noise reduction. Low speed pre ignition (LSPI) update.

Owners of these vehicles have filed 178 complaints in the transmission category.

Vehicles covered

See the problems and recalls for an exact car

Check the exact car before you pay: accidents, salvage or flood titles, odometer readings and previous owners.