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Service bulletin 1802302

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id635687
Published by NHTSA2002-10-30
Manufacturer's number1802302
Manufacturer's date2002-08-05
Replaces182998
NHTSA componentENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR

NHTSA's summary

CONCERNS WITH MALFUNCTION INDICATOR LAMP ILLUMINATION WITH A CATALYST EFFICIENCY FAILURE DIAGNOSTIC TROUBLE CODE (DTC P0420) RECORDED IN THE POWER TRAIN CONTROL MODULE (PCM). *TT

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Engine, Exhaust and emissions, Catalytic converter

Trouble codes named

P0420

Vehicles listed
CHRYSLER 300M1998
CHRYSLER 300M1999 (the catalog's model; the bulletin names a series or trim of it)
CHRYSLER CONCORDE1998, 1999
CHRYSLER LHS1998
CHRYSLER LHS1999
DODGE INTREPID1998, 1999

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
1829981998-10-15. Service bulletin. MALFUNCTION INDICATOR LAMP (MIL)ILLUMINATED WITH A CATALYST EFFICIENCY FAILURE. *YC