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Old 01-10-2010, 06:57 PM
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Question Cube P1421 DTC Help

My SES light came on the other day and went off the next day. I checked and had a code P1421. Nowhere can I find a listing for Cube Codes that include this one. Any help? Thanks.
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Old 05-05-2010, 08:18 AM
jacko48j jacko48j is offline
2003 350Z
03,09 350Z and G37x
Join Date: Feb 2010
Posts: 93

It pertains to a cold start/warm up system and there is no help yet from Nissan. I am told there is a TSB pending but that is about all. The ecm thinks the veh should warm up faster than it is and it sets this code. The pending tsb will probably involve software update/reprogramming.
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Old 01-19-2013, 08:36 PM
Jacarter220 Jacarter220 is offline
2013 Altima
Join Date: Oct 2012
Posts: 46

P1421 cold start control. There IS an ECM reprogram available!!!! Get it to your dealer... I'm pretty sure ECM reprograms are covered 5yrs/60K miles under warranty.
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Old 01-19-2013, 09:24 PM
bennyb53's Avatar
bennyb53 bennyb53 is offline
2002 Altima
2002 Altima
Join Date: Jan 2011
Location: Hawaii
Posts: 2,100

check the link below:

OBD2 - OBDII Code P1421 NISSAN - Cold Start Control | Engine-Codes.com
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cube, dtc, p1421

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