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Ram TSB #18-069-20 REV. A
2018 Ram 1500
TSB Document:
Affected Component: POWER TRAIN
- Summary
- Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Some customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find oneor more of the following Diagnostic Trouble Codes (DTCs):P0133-00 - O2 Sensor 1/1 Slow Response. P20EE-00 - SCR NOX Catalyst Efficiency Below Threshold Bank 1. P050E-00 - Cold Start Engine Exhaust Temperature Too Low. U0402-00 - Implausible Data Received From TCM. P0299-00 - Turbocharger Underboost Condition. P0402-00 - EGR Flow Excessive Detected. P249C-00 - Excessive Time To Enter Closed Loop Reductant Injection Control. P208B-00 - Reductant Pump 1 Control Performance. P20C6-00 - Reductant Heater 4 Control Circuit Performance. P245B-00 - EGR Cooler Bypass Control Circuit Performance. In addition, customers may experience the following concern:Some vehicles may have experienced a slight engine hesitation or lag inacceleration from engine startup until the engine and exhaust warmed up. This update is intended to reduce the hesitation or lag in accelerationfrom engine startup. Other software enhancement.Ability to enable the ?Fuel System Cleaning? routine in wiTECH.
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