Flash: Powertrain Control Module (PCM) Updates
Ram technical service bulletin 18-071-21 for 2021 Ram 2500 and 2021 Ram 3500.
- Bulletin number
- 18-071-21
- Component
- Back over prevention
- Summary
- Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the Engine Control Module/Powertrain Control Module (ECM/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 Diagnostic Trouble Codes (DTCs) have been set: P0607-00 - ECU Internal Performance. P0299-00 - Turbocharger Underboost. P1451-00 - Diesel Particulate Filter System Performance(ETL Sales Code only). The following improvements are also included in this update: Oil pressure switch modifications. Urea (DEF fliud) level sensor calibration update, to help prevent bumps in DEF level gauge.
Owners of these vehicles have filed 11 complaints in the driver assistance category.
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