RAM

1808823

Manufacturer communications

Publication date: 2023-08-11
Received by NHTSA: 2023-10-02
NHTSA record numbers: 10243245

Manufacturer summary

Original wording in English

Flash: Powertrain Control Module (PCM) Updates 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:? P0420 - Catalyst System Efficiency Below Threshold Bank 1. ? P0430 - Catalyst System Efficiency Below Threshold Bank 2. This bulletin involves reprogramming the PCM with the latest available software.

NHTSA manufacturer communications ↗

Reported code forms

P0420 P0430

Manufacturer wording

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

RamP0420

Catalyst System Efficiency Below Threshold Bank 1

NHTSA 10243245 · NHTSA 10243248 · NHTSA 11020111

RamP0430

Catalyst System Efficiency Below Threshold Bank 2

NHTSA 10243245 · NHTSA 10243248 · NHTSA 11020111

Check vehicle applicability

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Make	Model	Model year
Ram	1500	2019

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