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Old 09-07-2011, 06:56 PM
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NissanTech NissanTech is offline
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2004 Xterra
 
Join Date: Jun 2005
Location: California
Age: 52
Posts: 12,536
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I haven't had that problem before, but it almost sounds like your Altima has an intake leak. I wouldn't recommend replacing the MAF, but you could try cleaning it first.

More information about the P1273 code here: OBDII Code P1273 NISSAN - Air Fuel Ratio (A/F) Sensor 1 Lean Shift Monitoring Bank 1 | Engine-Codes.com
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