Question about 2001 Infiniti I30

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Diagnostic touble code on emission test code p1440

I failed my emission test with code p1440

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1 Answer

Type: Infiniti OBD P1440

Appears to be a small evap system leak

Posted on Apr 02, 2014

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Posted on Jan 02, 2017

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SOURCE: there is no problem only

A code P0430 may mean that one or more of the following has happened:

  • The catalytic converter is no longer functioning properly
  • An oxygen sensor is not reading (functioning) properly
  • There is an exhaust leak
If the Ox sensor has never been replaced I would do that.. Its a lot cheaper than the CAT. The one that needs to be replaced is AFTER the Catalytic Converter.

A good shop should be able to tell if this is your issue or not though.

Posted on May 07, 2011

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1 Answer

What does The code P1440 Mean on a 2001 Hyndai Elantra?


I looks to me like part of the gasoline evaporation emission
control is out of sorts. The gas fill cap may be loose or possibly missing, or it's seal failing. There is a "canister" as part of this system that should absorb the gas fumes from the tank. There may be a problem with that. If you are due for an Emission inspection get it fixed. You probably won't pass.

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I have a 1998 Nissan Maxima GLE, I Failed the Emission Inspection (DTC) Diagnostic Trouble Codes of "P1492","P1105" What these Codes exactly? mean


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Code P1440 on my 2001 Impala


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Oct 02, 2011 | 2001 Chevrolet Impala

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Manufactures code p1440 emissions


The P1440 code is for a small EVAP leak. Your gas cap being loose is a common EVAP problem. If not that, the EVAP canister is also well known for developing small cracks.

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Amber check engine light on a 2003 chevy 2500.


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1 Answer

Did not pass state inspection (vehicle)


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Auto Diagnostic Trouble Code


cORRECT. tHIS CODE DOES DEALs With emmissions. P1400 deals with the EGR valve. In case u are not aware, EGR stands for Exhaust Gas Re-circulation. What really this valve does is that it re-cycles some of the exhaust gases into the cylinder for combustion. The EGR valve might be blocked or has malfunctioned. It is advised that this valve changed or consult with a mechanic who is knowledgeable about this technology. a malfunctioned/dis-abled EGR system will cause the car to fail an emissions test, and may cause the EGR passages in the cylinder head and intake manifold to become blocked with carbon deposits, necessitating extensive engine disassembly for cleaning. So it is advised that u repair this ASAP

Jan 19, 2009 | 1997 Nissan Maxima

1 Answer

Failed the emission test


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