CHECK ENGINE CODES PO440 AND PO446 - Nissan Forum - Nissan Enthusiast Forums


Nissan Maxima The flagship luxury sedan from Nissan, combining performance with all of the modern touches you woudl expect in a luxury car.

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Old 06-15-2006, 11:13 AM
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Default CHECK ENGINE CODES PO440 AND PO446

KEEP GETTING THESE CODES WHAT IS CAUSING THIS NEED SOME ADVICE
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Old 06-16-2006, 05:42 AM
 
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Default RE: CHECK ENGINE CODES PO440 AND PO446

- smbdy glued kb caps lock on?
- what kinda boat u have?
- if maxima, points to EVAP, find wassup via clicking top left 'Favorite Links', ...see link below
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Old 08-03-2018, 05:31 AM
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P0440 = Evaporative emission control system small leak, negative pressure.
P0446 = Evaporative emission system vent control valve circuit.
Above is as per Haynes Manual for 2000 & 2001 Nissan Maximas. I've never had to deal with these codes so can't help you further. I hope this helps somewhat to narrow down the possible problem(s).
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