{"vehicle":{"id":"2019_jeep_wrangler","year":2019,"make":"Jeep","model":"Wrangler"},"code":"P04FC","generic":true,"description":null,"bulletins":{"as_of":"2026-10-19","count":9,"bulletins":[{"nhtsa_id":10223592,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2022-10-17","date":"2020-06-20","document_id":"1802120","mfr_campaign":null,"component":"POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)","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).","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10223592-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10223592-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10223592"},{"nhtsa_id":10221194,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2022-09-26","date":"2021-04-15","document_id":"1803721","mfr_campaign":null,"component":"POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE; 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:P02EE - Cylinder 1 Injector Circuit Performance(APAC, EMEA and LATAM Only). P02EF - Cylinder 2 Injector Circuit Performance(APAC, EMEA and LATAM Only). P02F0 - Cylinder 3 Injector Circuit Performance(APAC, EMEA and LATAM Only). P02F1 - Cylinder 4 Injector Circuit Performance(APAC, EMEA and LATAM Only). 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).","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10221194-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10221194-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10221194"},{"nhtsa_id":10194047,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-05-24","date":"2021-04-15","document_id":"18-037-21","mfr_campaign":null,"component":"EXTERIOR LIGHTING; BACK OVER PREVENTION; FUEL SYSTEM, GASOLINE; ELECTRICAL SYSTEM; SERVICE BRAKES","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:P02EE - Cylinder 1 Injector Circuit Performance(APAC, EMEA and LATAM Only). P02EF - Cylinder 2 Injector Circuit Performance(APAC, EMEA and LATAM Only). P02F0 - Cylinder 3 Injector Circuit Performance(APAC, EMEA and LATAM Only). P02F1 - Cylinder 4 Injector Circuit Performance(APAC, EMEA and LATAM Only). 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).","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10194047-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10194047-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10194047"},{"nhtsa_id":10181540,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2020-10-26","date":"2020-09-02","document_id":"S2018000010","mfr_campaign":null,"component":"ELECTRICAL SYSTEM","summary":"Malfunction Indicator Lamp (MIL) Illuminated, Diagnostic Trouble Code (DTC) P2C90 - Crankcase Ventilation System - Hose \"A\" Disconnected or P04FC -Crankcase Ventilation Performance","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10181540-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10181540-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10181540"},{"nhtsa_id":10177537,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2020-07-27","date":"2020-06-20","document_id":"18-021-20 REV. A","mfr_campaign":null,"component":"ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)","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).","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10177537-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10177537-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10177537"},{"nhtsa_id":10175567,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2020-05-26","date":"2020-03-19","document_id":"18-021-20","mfr_campaign":null,"component":"ELECTRICAL SYSTEM; EXTERIOR LIGHTING","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:P06EF - Engine Restart Performance. P04FC - Crankcase Ventilation System Performance. P050B - Cold Start Ignition Timing Performance. P0456 - EVAP System Small Leak.If DTC P0456 is present use the wiTECH Small Leak Verification Test (SLVT) to determine if a leak is present in the system. P0128 - Thermostat Rationality. The following software enhancement is included:Enable Soot Retention for vehicles equipped with Gasoline Particulate Filter (GPF). Customer or technician may also experience the following:Unable to read data information from the OBD II connector when using a generic scan tool(APAC Only).","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10175567-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10175567-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10175567"},{"nhtsa_id":10175154,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2020-05-18","date":"2020-03-19","document_id":"18-021-20","mfr_campaign":null,"component":"ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)","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:P06EF - Engine Restart Performance. P04FC - Crankcase Ventilation System Performance. P050B - Cold Start Ignition Timing Performance. P0456 - EVAP System Small Leak.If DTC P0456 is present use the wiTECH Small Leak Verification Test (SLVT) to determine if a leak is present in the system. P0128 - Thermostat Rationality. The following software enhancement is included:Enable Soot Retention for vehicles equipped with Gasoline Particulate Filter (GPF). Customer or technician may also experience the following:Unable to read data information from the OBD II connector when using a generic scan tool(APAC Only).","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10175154-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10175154-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10175154"},{"nhtsa_id":10174234,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2020-04-27","date":"2020-03-19","document_id":"18-021-20","mfr_campaign":null,"component":"ELECTRICAL SYSTEM; POWER TRAIN","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:P06EF - Engine Restart Performance. P04FC - Crankcase Ventilation System Performance. P050B - Cold Start Ignition Timing Performance. P0456 - EVAP System Small Leak.If DTC P0456 is present use the wiTECH Small Leak Verification Test (SLVT) to determine if a leak is present in the system. P0128 - Thermostat Rationality. The following software enhancement is included:Enable Soot Retention for vehicles equipped with Gasoline Particulate Filter (GPF). Customer or technician may also experience the following:Unable to read data information from the OBD II connector when using a generic scan tool(APAC Only).","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10174234-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10174234-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10174234"},{"nhtsa_id":10170398,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2020-01-21","date":"2019-12-17","document_id":"18-012-19 REV. E","mfr_campaign":null,"component":"POWER TRAIN; 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: P04FC - Crankcase Ventilation System Performance. P050B - Cold Start Ignition Timing Performance. P0456 - EVAP System Small Leak. P0128 - Thermostat Rationality. The following software enhancement is included:Enable Soot Retention for vehicles equipped with Gasoline Particulate Filter (GPF). Customer or technician may also experience the following:Unable to read data information from the OBD II connector when using a generic scan tool(APAC Only).","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10170398-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10170398-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10170398"}],"url":"https://open.wenmarpro.com/makes/jeep/wrangler/2019/bulletins?code=P04FC"},"related":{"components":[],"bulletins":[],"recalls":{"may_apply":true,"recalls":[],"lookup":{"nhtsa":"https://www.nhtsa.gov/recalls","tc":"https://wwwapps.tc.gc.ca/Saf-Sec-Sur/7/VRDB-BDRV/search-recherche/menu.aspx?lang=eng","maker":null}}},"url":"https://open.wenmarpro.com/makes/jeep/wrangler/2019/codes/P04FC","note":"The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.","attribution":["Contains information licensed under the Open Government Licence – Canada."]}