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Help! CEL P2A00 after HFC installed

I just dont understand why would ECU adding fuel onth Bank 1 while the Bank 1 front O2 sensor reading is already too rich? Is the rear O2 sensor contribute

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		Nissan 370Z Forum > Nissan 370Z Tech Area > Engine & Drivetrain > Intake/Exhaust
Help! CEL P2A00 after HFC installed

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04-19-2013, 11:47 AM	#4 (permalink)
gsg740 Base Member Join Date: Feb 2012 Location: Seattle, WA Posts: 81 Drives: 2011 nismo 370z Rep Power: 14	I just dont understand why would ECU adding fuel onth Bank 1 while the Bank 1 front O2 sensor reading is already too rich? Is the rear O2 sensor contribute anything to the A/F ratio? or will the rear sensor affect the long term fuel trim? If I disconnect the rear O2 sensor, will that help? Last edited by gsg740; 04-19-2013 at 11:53 AM.

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