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Ram TSB #1812722
2021 Ram 3500
TSB Document:
Affected Component: ELECTRICAL SYSTEM
- Summary
- Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the Engine Control Module (ECM) / Powertrain Control Module (PCM) with the latest available software. PCM software related to this Technical Service Bulletin (TSB) is included within the Y43 Recall. If not already completed, please perform the Y43 recall if the vehicle is on the recall VIN list. For all other vehicles perform the Repair Procedure below. 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. The following improvements are also included in this update: Idle stability improvement. Fuel system run-up test routine, wiTECH improvement. Aftertreatment system performance test routine, wiTECH improvement. Power Take Off (PTO) system improvements. Enabling Estop for split shaft PTO systems. Oil pressure switch modifications. Urea (DEF fluid) level sensor calibration update, to help prevent bumps in DEF level gauge.
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