- November 15: Jeep Power Steering Pump Fire Risk Causes Lawsuit news | 5 days ago
- November 14: Dodge Durangos and Jeep Grand Cherokees Recalled Over ABS Modules recalls | 6 days ago
- October 25: Jeep 4xe FORM Class Action Lawsuit Moves Forward news | 26 days ago
- October 1: Jeep 4xe Fire Recall Issued Following 13 Jeep 4xe Fires recalls | 50 days ago
- September 30: Jeep Wrangler 4xe Battery Problems Argued in Court news | 51 days ago
Jeep TSB #18-021-20 REV. A
2019 Jeep Wrangler
TSB Document:
Affected Component: ELECTRICAL SYSTEM
- Summary
- Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or more of the following DTCs have been set:P012A - Turbocharger/Supercharger Inlet Pressure Sensor 1(APAC, EMEA and LATAM Only). P012C - Turbocharger/Supercharger Inlet Air Pressure Sensor 1 Circuit Low(APAC, EMEA and LATAM Only). P012D - Turbocharger/Supercharger Inlet Air Pressure Sensor 1 Circuit High(APAC, EMEA and LATAM Only). P2C90 - Crankcase Ventilation System - Hose "A" Disconnected(APAC, EMEA and LATAM Only). P06EF - Engine Restart Performance. P04FC - Crankcase Ventilation System Performance. P050B - Cold Start Ignition Timing Performance. P0128 - Thermostat Rationality. P0456 - EVAP System Small Leak. If DTC P0456 is present, use the wiTECH Small Leak Verification Test (SLVT) to determine if there is a leak in the system. The following software enhancement is also available in this update:Enable soot retention for vehicles equipped with Gasoline Particulate Filter (GPF). Technicians may also experience the following:Unable to read data information from the OBD II connector when using a generic scan tool(APAC Only).
Click a tab for more information.