Question about 2003 Chevrolet Impala

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What be the most common thing wrong with the car for it to have the code p0440

She took her car to auto zone and they checked her car she has 4 different codes I need to know what would she need to get it fixed here are the codes p0440,p0128,p0327 and p0742

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  • Chevrolet Master
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Need to put your car on a scanner to properly diagnose your problems p0440 evap system,128 thermostate ,p0742 torque convertor,p0327 knock sensor. take your car to a good mechanic

Posted on Dec 02, 2014

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Posted on Jan 02, 2017

  • 422 Answers

SOURCE: code 422

this code is telling you the catalitic converter is not operating propery and it pretty common

Posted on Aug 26, 2008

  • 1 Answer

SOURCE: 1996 Chevy Blazer check engine light on

More then likely its the Canister Purge Solenoid. you can find it online at www.autozone.com the part number is PV140. And to replace it on blazer you have to remove the spare tire. Alot of people don't know where this part is so I hope this helps you and good luck.

Posted on Oct 14, 2008

motor1258
  • 6674 Answers

SOURCE: P0128 Code for a 2004 trailblazer with service engine soon light

Replacing it is the only fix. Sounds like it may be sticking open slightly.

Posted on May 27, 2009

  • 162 Answers

SOURCE: 1998 chevy lumina car. DTC code p0440. I know

You will need to drop the tank if you have a strong gas odor. Rubber line between sending unit and metal pipe is leaking.

Posted on Sep 21, 2009

  • 880 Answers

SOURCE: i have 2000 chevy impala 3.4 engine i have check

This indicates a fuel vapor leak in the EVAP control system. It means a very small leak has been detected. In fact, the leak can be from a hole as small as 0.04" in diameter. The (EVAP) emission control system prevents the escape of fuel vapors from a vehicle's fuel system. Fuel vapors are routed by hoses to a charcoal canister for storage. Later, when the engine is running a purge control valve opens allowing intake vacuum to siphon the fuel vapors into the engine.
code P0442 most likely means one or more of the following has happened:

  • A loose or improperly affixed gas cap
  • A non-conforming gas cap (i.e. not factory/original brand)
  • A small leak/hole in a fuel vapor hose/tube
  • Other small leak in EVAP system
  • Faulty vent o-ring seal
With a P0442, the most common repair is to:
  • Remove and reinstall the gas cap, clear the codes, and drive for a day and see if the codes come back.
  • Otherwise, replace the gas cap, or
  • Inspect the EVAP system for cuts/holes in tubes/hoses

Posted on Dec 31, 2009

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3 Answers

What does code 440 mean on a 2000 Chevrolet Malibu


P0440 - is a large EVAP leak. The EVAP system stores fuel vapor from the fuel tank and then delivers it into the engine under certain condition. The EVAP system basically consists of a purge solenoid, vent solenoid, charcoal canister, fuel tank and a fuel tank pressure sensor.

There are two common causes for this code. One is the fuel cap, make sure it is tight. Also check the filler knock where the gas caps seals to see if there is an excessive amount of rust build up which can also cause this code.

The other is the vent solenoid. If it sticks open the system will not be able to go into a vacuum mode. The vent solenoid is usually tucked up in the quarter panel on the drivers side right behind the tire.

A scan can tool is usually needed to monitor data and activate solenoids.

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Try getting gas
tighten the cap till it clicks
Take it to auto zone, have him clear the error codes
And see if it comes back.
A common code for all cars is vacume loss in the fuel system, or loose gas cap.
Try it.

Feb 10, 2010 | 2001 Mercury Grand Marquis

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P0442 Evaporative Emission Control System Leak Detected (small leak)
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2000 Saturn SL2-" Service engine soon light" won't go out, even after having oil changed. Any ideas? Advance Auto's light says code: P0440.


You have to have one of the parts stores clear it. Did you check you gas cap. P0440 Is an emissions codes usually caused from a loose gas cap

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You ECM has detected an issue with the engine and or transmission performance. You can take it to Auto Zone and have them scan the car for the DTC codes and they can advise you on how to address the issue. Auto Zone scan free of charge and if there are any issues, Auto Zone can give you the step by step instructions to getting the job done with common tools. Good luck and keep me posted, be glad to answer any questions you may have with the DTC codes Auto Zone will give you.

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What those code p1441 manufacturer control auxiliary emission controls mean


what you want to do is take it to nissan and scan it with the consult2 diagnostic system to tell you which of the many things in the system have failed.
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