{"vehicle":{"id":"2016_ram_4500","year":2016,"make":"Ram","model":"4500"},"code":"P203C","generic":true,"description":null,"bulletins":{"as_of":"2026-10-19","count":5,"bulletins":[{"nhtsa_id":10224627,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2022-10-24","date":"2016-04-02","document_id":"18-039-16","mfr_campaign":null,"component":"BACK OVER PREVENTION; EXTERIOR LIGHTING; FUEL SYSTEM, GASOLINE","summary":"Flash: 6.7L Diagnostic And System Improvements This bulletin involves reprogramming the Engine Control Module/Powertrain Control Module (ECM/PCM) with the latest available software. These DTCs have been changed from a one trip fault to a two trip fault: · P2280 - Air Flow Restriction / Leak Between Air Cleaner And MAF. · P203C - (Diesel Exhaust Fluid) Reductant Level Sensor Circuit Low. · P208D - (Diesel Exhaust Fluid) Reductant Pump Control Circuit High. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation a technician may find the following Diagnostic Trouble Codes (DTCs) set in the PCM memory: · P1C55 - NOx Sensor Intermittent - Bank 1 Sensor 1. · P207F - Reductant Quality Performance. · P218F - Reductant No Flow Detected. · U110E - Lost Ambient Temperature Message. In addition to addressing the above DTCs, the following powertrain system improvements/enhancements are also included in this software release: · Ambient Air Temperature Improvements. · Stationary de-soot with WiTech fix.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2016/MC-10224627-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2016/MC-10224627-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10224627"},{"nhtsa_id":10222970,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2022-10-17","date":"2022-01-06","document_id":"1800322","mfr_campaign":null,"component":"ELECTRICAL SYSTEM; FUEL SYSTEM, GASOLINE; SERVICE BRAKES; BACK OVER PREVENTION; 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 a technician may find the following DTCs set in the PCM memory: P064F - Unauthorized Software/Calibration Detected. P218F - Reductant No Flow Detected. P202E - (Diesel Exhaust Fluid) Reductant Injector Performance. U0001-00 - CAN C BUS. P1C55 - NOx Sensor Intermittent - Bank 1 Sensor 1. P24A5 - EGR Cooler Bypass Bank 1 Control Stuck. P207F - Reductant Quality Performance. P218F - Reductant No Flow Detected. U110E - Lost Ambient Temperature Message. The following Diagnostic Trouble Codes (DTCs) have been changed from a one trip fault to a two trip fault:P2280 - Air Flow Restriction / Leak Between Air Cleaner and MAF. P203C - (Diesel Exhaust Fluid) Reductant Level Sensor Circuit Low. P208D - (Diesel Exhaust Fluid) Reductant Pump Control Circuit High. The following improvements/enhancements are also included in this software release:Fuel pressure override test improvement for wiTECH. AC pressure sensor error threshold change. No crank, No start fix. Ambient Air Temperature Improvements. Stationary de-soot with WiTECH fix.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2022/MC-10222970-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2022/MC-10222970-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10222970"},{"nhtsa_id":10217495,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2022-08-08","date":"2017-11-09","document_id":"18-092-17","mfr_campaign":null,"component":"SERVICE BRAKES, HYDRAULIC; BACK OVER PREVENTION; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE; ELECTRICAL SYSTEM; POWER TRAIN; EXTERIOR LIGHTING; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM); FUEL SYSTEM, GASOLINE","summary":"Flash: 6.7L Diagnostic and System Improvements This bulletin involves reprogramming the Engine Control Module/Powertrain Control Module (ECM/PCM) with the latest available software. The following Diagnostic Trouble Codes (DTCs) have been changed from a one trip fault to a two trip fault:P2280 - Air Flow Restriction / Leak Between Air Cleaner and MAF. P203C - (Diesel Exhaust Fluid) Reductant Level Sensor Circuit Low. P208D - (Diesel Exhaust Fluid) Reductant Pump Control Circuit High. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation a technician may find the following DTCs set in the PCM memory:P218F - Reductant No Flow Detected(automatic transmission only). P202E - (Diesel Exhaust Fluid) Reductant Injector Performance(automatic transmission only). U0001-00 - CAN C BUS(automatic transmission only). P1C55 - NOx Sensor Intermittent - Bank 1 Sensor 1(automatic transmission only). P24A5 - EGR Cooler Bypass Bank 1 Control Stuck(automatic transmission only). P207F - Reductant Quality Performance. P218F - Reductant No Flow Detected. U110E - Lost Ambient Temperature Message. The following improvements/enhancements are also included in this software release:Fuel pressure override test improvement for wiTECH(automatic transmission only). AC pressure sensor error threshold change(automatic transmission only). No crank, No start fix(automatic transmission only). Ambient Air Temperature Improvements. Stationary de-soot with WiTECH fix.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2017/MC-10217495-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2017/MC-10217495-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10217495"},{"nhtsa_id":10216314,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2022-07-25","date":"2017-11-09","document_id":"18-092-17","mfr_campaign":null,"component":"ENGINE AND ENGINE COOLING; POWER TRAIN; POWER TRAIN:MANUAL TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); EQUIPMENT","summary":"Flash: 6.7L Diagnostic and System Improvements This bulletin involves reprogramming the Engine Control Module/Powertrain Control Module (ECM/PCM) with the latest available software. The following Diagnostic Trouble Codes (DTCs) have been changed from a one trip fault to a two trip fault:P2280 - Air Flow Restriction / Leak Between Air Cleaner and MAF. P203C - (Diesel Exhaust Fluid) Reductant Level Sensor Circuit Low. P208D - (Diesel Exhaust Fluid) Reductant Pump Control Circuit High. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation a technician may find the following DTCs set in the PCM memory:P218F - Reductant No Flow Detected(automatic transmission only). P202E - (Diesel Exhaust Fluid) Reductant Injector Performance(automatic transmission only). U0001-00 - CAN C BUS(automatic transmission only). P1C55 - NOx Sensor Intermittent - Bank 1 Sensor 1(automatic transmission only). P24A5 - EGR Cooler Bypass Bank 1 Control Stuck(automatic transmission only). P207F - Reductant Quality Performance. P218F - Reductant No Flow Detected. U110E - Lost Ambient Temperature Message. The following improvements/enhancements are also included in this software release:Fuel pressure override test improvement for wiTECH(automatic transmission only). AC pressure sensor error threshold change(automatic transmission only). No crank, No start fix(automatic transmission only). Ambient Air Temperature Improvements. Stationary de-soot with WiTECH fix.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2017/MC-10216314-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2017/MC-10216314-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10216314"},{"nhtsa_id":10140171,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2018-06-11","date":"2016-04-02","document_id":"18-039-16","mfr_campaign":null,"component":"ENGINE AND ENGINE COOLING","summary":"Flash: 6.7L Diagnostic And System Improvements This bulletin involves reprogramming the Engine Control Module/Powertrain Control Module (ECM/PCM) with the latest available software. These DTCs have been changed from a one trip fault to a two trip fault: · P2280 - Air Flow Restriction / Leak Between Air Cleaner And MAF. · P203C - (Diesel Exhaust Fluid) Reductant Level Sensor Circuit Low. · P208D - (Diesel Exhaust Fluid) Reductant Pump Control Circuit High. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation a technician may find the following Diagnostic Trouble Codes (DTCs) set in the PCM memory: · P1C55 - NOx Sensor Intermittent - Bank 1 Sensor 1. · P207F - Reductant Quality Performance. · P218F - Reductant No Flow Detected. · U110E - Lost Ambient Temperature Message. In addition to addressing the above DTCs, the following powertrain system improvements/enhancements are also included in this software release: · Ambient Air Temperature Improvements. · Stationary de-soot with WiTech fix.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2016/MC-10140171-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2016/MC-10140171-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10140171"}],"url":"https://open.wenmarpro.com/makes/ram/4500/2016/bulletins?code=P203C"},"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/ram/4500/2016/codes/P203C","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."]}