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Old 11-27-2012, 08:13 PM
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NissanTech NissanTech is offline
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2004 Xterra
 
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Quote:
Am I on the correct path to clearing these codes?
Without performing some test to diagnose the problem, it's hard to say.

When you removed the canister, did you find water inside the canister?

Did you find any loose hose or connector?

How is the gas cap? cap seal? can you firmly tight the cap?

If you no water was found inside the canister, I doubt the problem is the canister.

Quote:
Do I have to clear them by removing the positive battery cable to reset the computer and then drive (how far?) to reset the learning part of the computer?
If the problem is indeed the canister, then yes. Disconnecting the car battery to reset the code is correct.

P0455 NISSAN - EVAP Control System Gross Leak Detected

Read more: OBD2 - OBDII Code P0455 NISSAN - EVAP Control System Gross Leak Detected | Engine-Codes.com

P1446 NISSAN - EVAP Canister Vent Control Valve Close

Read more: OBD2 - OBDII Code P1446 NISSAN - EVAP Canister Vent Control Valve Close | Engine-Codes.com
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