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SNUNEZ

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SNUNEZ
New User

Jan 19, 2013, 1:33 PM

Post #1 of 3 (4190 views)
SNUNEZ Sign In
2006 altima 2.5 auto transmission code p0420 please help


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jan 19, 2013, 1:51 PM

Post #2 of 3 (4180 views)
Re: SNUNEZ Sign In
Replace the bank 1 Catalytic Converter.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Discretesignals
Ultimate Carjunky / Moderator
Discretesignals profile image

Jan 21, 2013, 7:03 PM

Post #3 of 3 (4130 views)
Re: SNUNEZ Sign In
Before you go spending a whole lot of money on a cat, you might want to swing into your local dealer and see if the PCM's calibration is up to date.


Classification:
EC10-014
Reference:
NTB10-083
Date: July 8, 2010

2005 - 2006 ALTIMA WITH QR25DE ENGINE AND 50 STATE EMISSIONS; MIL ON WITH DTC P0420

APPLIED VEHICLE: 2005-2006 Altima (L31) APPLIED ENGINE: QR25DE* Engine Only * 50 State emission specification
ONLY IF YOU CONFIRM:DTC P0420 (Catalyst System Efficiency Below Threshold) is stored in the ECM.

ACTION:

Determine if this bulletin applies by checking the ECM Part Number.^ You will do this by performing Step A in the

SERVICE PROCEDURE.

If this bulletin applies, reprogram the ECM and perform P0420 DTC Confirmation.

^ You will perform Step B and C in the SERVICE PROCEDURE.

If this bulletin does not apply, refer back to ASIST and the Electronic Service Manual (ESM) for further diagnostic and repair information.





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