{"nhtsa_id":10139942,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2018-06-11","date":"2016-06-02","document_id":"18-027-16 REV. C","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING","mfr_system":null,"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: · P0421 - Catalyst 1 Efficiency Below Threshold Bank 1. · 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 DTCs set in the PCM memory: · P0128 - Thermostat Rationality Improvements. · P2281 - Air Leak Between MAF and Throttle Body. · P218F - Reductant No Flow Detected. · P0218 - Transmission High Temperature Operation Activated (68RFE Only). · P0868 - Line Pressure Low, MIL Action (68RFE Only). · U110E - Lost Ambient Temperature Message. · P205E - (Diesel Exhaust Fluid) Reductant Tank Temperature Sensor Circuit Intermittent (setting when the block heater is plugged in). In addition to addressing the above DTCs, the following powertrain system improvements/enhancements are also included in this software release: · Engine Noise Improvements. · Engine Hesitation Improvement. · Improved Engine Fuel Economy. · Reduction in engine noise during regeneration at idle. · 68RFE Transmission Overall Shift Quality Improvements. · Test results fix for partial range misfire (68RFE Only). · Ambient Air Temperature Improvements. · Stationary Desoot with wiTECH Fix. · OBD Misfire Monitoring Improvement (68RFE Only).","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2016/MC-10139942-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2016/MC-10139942-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10139942","components":[{"id":"engine","name":"Engine","parent":null}],"codes":["P0128","P0218","P0421","P0868","P203C","P205E","P208D","P218F","P2280","P2281","U110E"],"topics":[],"vehicles":[{"make":"RAM","model":"2500","year_from":2016,"year_to":2016,"match":"exact","vehicle_ids":["2016_ram_2500"]},{"make":"RAM","model":"3500","year_from":2016,"year_to":2016,"match":"exact","vehicle_ids":["2016_ram_3500"]}],"as_of":"2026-10-19","note":"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.","attribution":[]}