CHRYSLER

18-108-20

Manufacturer communications

Publication date: 2020-12-10
Received by NHTSA: 2021-03-01
NHTSA record numbers: 10187698

Manufacturer summary

Original wording in English

Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. 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):P0420 - Catalyst System Efficiency Below Threshold Bank 1 P0430 - Catalyst System Efficiency Below Threshold Bank 2. Customers may describe the following:Hearing a pre-detonation noise (Spark Knock) sound in the engine during acceleration.

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.

ChryslerP0420

Catalyst System Efficiency Below Threshold Bank 1

NHTSA 10187698 · NHTSA 11012184 · NHTSA 11034362

ChryslerP0430

Catalyst System Efficiency Below Threshold Bank 2

NHTSA 10187698 · NHTSA 11012184 · NHTSA 11034362

Check vehicle applicability

A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

Make	Model	Model year
Chrysler	300	2019

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