Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Engine Controls - MIL ON/DTC P0420 Set: Overview

Classification: EC05-017B

Reference: NTB06-004B

Date: June 12, 2009

2005 - 2006 ALTIMA MIL "ON" WITH DTC P0420

This bulletin has been amended. Changes have been made through out the bulletin. Please discard all previous versions of this bulletin.

APPLIED VEHICLES: 2005-2006 Altima (L31)

APPLIED ENGINE:
SULEV QR25* Engine Only
*California emission specification - Super Ultra Low Emission





APPLIED VIN / DATE: (Smyrna production)





APPLIED VIN / DATE: (Canton production)

IF YOU CONFIRM

DTC P0420 is stored in the ECM

DETERMINE IF:

This bulletin applies by checking the ECM Part Number. You will do this by performing steps A and B in the Service Procedure.

ACTION

If this bulletin applies, inspect the catalytic converter and reprogram the ECM (steps C and D in the Service Procedure).

IMPORTANT:
The purpose of "ACTIONS" (above) is to give you a quick idea of the work you will be performing. You MUST closely follow the entire Service Procedure as it contains information that is essential to successfully completing this repair.





PARTS INFORMATION





CLAIMS INFORMATION





Disclaimer