2003 Mazda MPV Logo
Posted on Sep 29, 2008
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2003 Mazda MPV trouble codes

My MPV does not idle properly. It seems to be related to a moisture problem. It happens primarily in the morning when the car is cold. I read the fault codes and got the following: 1) P0442 - EVAP Emission Control System Leak (small), 2) P0441 - EVAP Emission Control System Purge FLow Fault, 3) P0456 - EVAP Emission Control System leak very small, 4) P0505 - Idle control system malfunction. I'm hoping these are all related to the same problem. Any ideas?

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  • bartyme34 Mar 08, 2009

    2004 Mazda MPV Code P0442, P0302. Engine misfiring.

  • Anonymous Mar 13, 2014

    evap system small leak detected

  • Anonymous Mar 15, 2014

    Evap leak code p0456

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  • Posted on Sep 29, 2008
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Check the pcv hose at the back of the intake manifold it often leaks and will cause several idle problems

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0helpful
1answer

I have a Mazda MPV 2003, i bought from japan, 7 months ago, this van was running well until two days ago, it stsrts and cut off, starts again and while driving it is losing power then it will speed up
Before any diagnostics, I would run a tank of gas with a bottle of fuel dryer and injector cleaner to ensure that the engine racing isn't resulting from moisture and clogged injectors.
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Jul 28, 2014 • 2000 Mazda MPV
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Mazda MPV 2003 - keeps stalling when press brake - seems to be related to idle. Can turn back on as of now.
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Mar 20, 2014 • 2003 Mazda MPV
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Mazda MPV 2003, Engine light on, code P0421 - warm up catalyst efficiency below threshold bank 1
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Nov 30, 2010 • 2003 Mazda MPV
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2003 mazda mpv. I REPLACED THE UPPER PVC HOSE.
Tcs is not related to the engine. Please get a scan and post the trouble codes here.
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Jul 19, 2017 • 2003 Mazda MPV
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I have a 2003 Mazda MPV , the problem only happen
I ahve same issue with my 2004 MPV. I replaced the plugs, coils etc. No help.

did you ever get it fixed?
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Jan 21, 2010 • 2003 Mazda MPV
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2003 Mazda MPV ES that idles very rough when warm
that means could be vacuum leak
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Jan 10, 2010 • 2003 Mazda MPV
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My Mazda MPV randomly begins to "chug" and act like it will die at a stop. the check engine light comes on. Started about 6 months ago. Seems to happen more when it rains. If I tighten the gas cap it stops...
the gas cap and check engine light thing are related in terms of the EVAP system, or the evaporative emisions system. This is NOT where your surge, or "chug" is coming from. The surge could be coming from a Exhaust Gas Recurculation valve that is starting to bind or "hang up" a bit. DO you notice this happens more at lights, or when coming to a stop? if so it could be an idle air control vavle.
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Oct 29, 2009 • 2004 Mazda MPV
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2003 Mazda MPV codes P0102, 0108, 0113, 0421, 0431, 0505, 0507
The codes are mass air flow sensor,manifold pressure, intake air temp, catalytic converter.

The only thing I cant think of is that the manifold seals are defective and theres no back pressure which would explain the erradic idleing.
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Apr 25, 2009 • 2003 Mazda MPV
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2004 mazda mpv
I don't have a solution to the problem, but Mazda should. I have replaced 3 different ignition coils in the last 3 months. I am spending more on repairs than I was in a car payment. Mazda has been no help at all!
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Jul 24, 2008 • 2003 Mazda MPV
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Worsening shudder
Do a compression test on the cylinder and compare it to a cylinder on the other side. If the compession reads lower in #4 the chances of the head gasket leaking is pretty good. What's happening is #4 cylinder may be blowing air into the cylinder next to it. You will not have any water in the oil or visa versa if this is happening.
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Jul 08, 2008 • 2002 Mazda MPV
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I have a Mazda MPV 2003, i bought from japan, 7 months ago, this van was running well until two days ago, it stsrts and cut off, starts again and while driving it is losing power then it will speed up

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