Question about 2003 Honda Accord

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Code po511 my engine light is on

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Why does the 2012 kia forte engine light turn on?

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Jul 05, 2014 | 2011 Kia Forte

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Replaced Cylinder Head "Gasket" and Now have PO511 Code. Disassembled and Reassembled in the same order. What did I miss? Could it be a Timing Issue.? I did notice a few degree change.

i bet its fix already , thanks for post back. that you did.
did you google this?
its a bad speed sensor.
511 is idle too high.
vacuum leak?
is idle too high......

lots of things can cause this.
but first is it too high, expecially hot.
or the ISC is unpluged or sticky , (air valves sticking idle air control valves)

Sep 23, 2013 | 2004 Honda Civic 1.7

1 Answer

Replaced Cylinder Head and Now I have a Code PO511?

google finds this 1 second, did you try?
idle controls failures.
idle controls fail for many reasons.
ISC unplugged, is my wild and useless guess.....
the ECU only knows what tests (monitors fail)
in this case IDLE speed is out of control
the scan tool shows you (freeze frame) when and how it failed.
1: ISC sat for 1 weak and the nasty gum in it went solid, causing t
the valve to stick, (very common)
and not connected? the wire connector to it?
2: you left off vacuum hoses or put them back wrong?
and now there is an air leak, making the ISC out of control/?

old post. doing 60day, zero posts

Sep 23, 2013 | 2004 Honda Civic 1.7

1 Answer


P0511 is set when there is a circuit problem with the idle air control motor. There are 2 wires that go to the idle air control motor that
could have a open or the idle air control is bad itself.

Dec 06, 2012 | 2003 Ford Escape

2 Answers

How to reset engine lite in dash

Check engine light comes on and off, these are indication that there is some error code stored in your vehicles ECM. The engine module computer needs to be scanned. These will give the code and as per the error code the further problem can be detected and confirmed. The engine light indicator blinks or remains steady on dash when engine computer noticed any problem with any engine electrically operated components.

For more help, I suggest you to refer the help links provided below. These will let you know more about which areas to look, check, when there is engine light coming up on dash panel.


Click the link below: -------

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These details will help.


Nov 28, 2012 | 1999 Acura CL

1 Answer

I changed my IAC valve on my 2004 ford taurus dohc, and now the rpms sit between 2000 and 2500. I checked it with a scanner and it gave me the code p0511....How can i fix this?


Jul 27, 2011 | Ford Taurus Cars & Trucks

2 Answers

I have 05 ford tarus it's giving me code P1633 and po511. I could start the car but it won't stay on. you could give it some gas and it sounds like air is coming from somewhere. we checked all the gaskets....

Actually p1633 is code for loss of power for KAM-keep alive memory to computer and p0511 is idle air control motor problem.

Sounds like you may have a wiring issue

May 06, 2010 | Ford Taurus Cars & Trucks

2 Answers

I have a Ford Focus ZX4 - 2.0 L Engine. My Engine Light is on and when preparing to stop the Engine dies just before the stop. I got the following Trouble Codes: PO11, PO511, PO122 and P2195. I replaced my...

You can go to and register for FULL FREE online repair manual with diagnostic codes, diagrams, testing, replacing, part locations, and much much more.
I can look them up but need the year of your focus

Oct 29, 2009 | Ford Focus Cars & Trucks

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