{"nhtsa_id":10121651,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2017-11-03","date":"2016-07-09","document_id":"18-082-16","mfr_campaign":null,"replaces":null,"component":"SERVICE BRAKES, HYDRAULIC; ELECTRICAL SYSTEM; POWER TRAIN","mfr_system":null,"summary":"Flash: 6.4L Powertrain Diagnostic And System Enhancements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following DTCs: · **P0335 - Crankshaft Position Sensor Circuit. · P2610 - PCM Internal Engine Off Timer Performance.** · P0456 - EVAP System Small Leak. · P3402 - Cylinder 1 Deactivation Control Performance. · P3426 - Cylinder 4 Deactivation Control Performance. · P3442 - Cylinder 6 Deactivation Control Performance. · P3450 - Cylinder 7 Deactivation Control Performance. · P2610 - PCM Internal Engine Off Timer Performance set in the PCM memory. In addition to the DTCs listed above, the software update will improve: · **Correct an issue related to rounding of the cruise control set speed displayed in the cluster. · Brake Throttle Override calibration has changed to be less sensitive. · Throttle Body supplier change has caused a widening of the minimum and maximum voltage limits · Correct a software issue with oil pressure light function at key-up. · Correct a software issue related to idle timer. · Correct a software issue with inconsistent engine RPM increments/decrements with operator idle speed.(DD/DF/DP ONLY).** · Improved Cruise Control Acceleration mode. · Improved Multi Displacement System operation 6-Speed Automatic 66RFE transmission (Sales Code DFP). · Multi Displacement System function improved while in PTO stationary mode. 6-Speed Auto Aisin AS66RC transmission (Sales Code DF3). · Potential small improvement in fuel economy at higher altitudes. · Potential improvement in high altitude engine idle RPM stability. · EGR monitor status function.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2016/MC-10121651-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2016/MC-10121651-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10121651","components":[{"id":"brakes","name":"Brakes","parent":null},{"id":"electrical","name":"Electrical system","parent":null},{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":["P0335","P0456","P2610","P3402","P3426","P3442","P3450"],"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"]},{"make":"RAM","model":"4500","year_from":2016,"year_to":2016,"match":"exact","vehicle_ids":["2016_ram_4500"]}],"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":[]}