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18-069-20

Manufacturer communications

Publication date
2020-08-26
Received by NHTSA
2020-09-28
NHTSA record numbers
10180278

Manufacturer summary

Original wording in English

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 one or 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. Other software enhancement.Ability to enable the ?Fuel System Cleaning? routine in wiTECH.

NHTSA manufacturer communications ↗

Reported code forms

P0133P0299P0402P050EP208BP20C6P20EEP245BP249CU0402

Manufacturer wording

Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.

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MakeModelModel year
Ram15002018

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