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Old 09-14-2006, 01:30 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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Hello

DTC P0171 (BANK 1), P0174 (BANK 2) FUEL INJECTION SYSTEM FUNCTION
(LEAN)

Possible Cause:
- Intake air leaks
- Heated oxygen sensor 1 (front)
- Injectors
- Exhaust gas leaks
- Incorrect fuel pressure
- Lack of fuel
- Mass air flow sensor

You can find the location of the O2 sensor in this document:


http://www.nissanhelp.com/Ownership/...TIFICATION.htm
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