Question about 2005 Dodge Grand Caravan

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I have a dodge caravan thats showing a p0508 code.,,, what's wrong and how do I go about fixing it?

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Engine running. Battery voltage greater than 10 volts .

The IAC sense circuit is less than 175 mA . One Trip Fault.


  • IAC motor operation
  • IAC motor
  • (K61) IAC motor control circuit shorted to ground
  • (K961) IAC return circuit open
  • (K961) IAC return circuit shorted to ground
  • (K61) IAC motor control circuit open
  • PCM
  • I have a dodge caravan thats showing a p0508 - consistant_15.gifconsistaI have a dodge caravan thats showing a p0508 - consistant_17.gifconsistant_17.gif
      Thanks, don't forget to give me a great rating and comment please:)

    Posted on Mar 24, 2011

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    Undercurrent condition detected in linear idle air control motor feedback sense circuit. may have to replace the idle air control motor. parts may be available at a dealer only.

    Posted on Mar 24, 2011

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    1 Answer

    Location idle air control valve

    Your vehicle does not have a IAC valve ! Your vehicle has electronic throttle control . P0351 probably a wiring issue or open driver inside the PCM for cylinder # one . Your best bet take it to the dealer , you have not the knowledge or tools to diagnose this problem ! You are obviously using some cheap code reader to pull codes with or you wouldn't come up with P0508 . Factory service info. does not show Po508 for that vehicle. Plus working for ford i know for a fact this vehicle does not have IAC . If the driver inside the PCM is bad it will need to go to dealer anyway for programming .

    Jun 25, 2017 | Cars & Trucks

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    Code p0508

    Code 508 is for a problem with the idle air control valve circuit.
    The valve and circuit would need to be tested. I doubt the code is causing the no start condition.

    Jun 07, 2013 | Cars & Trucks

    1 Answer

    P0016 what is that n how u fix it

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    Jun 03, 2013 | Cars & Trucks

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    Rear wiper, washer and 2 other buttons have little lights that will not stop blinking. I just bought the van and know absoulely nothing about it however a service tech. told me about a code that could be...

    False. these flashing lights are telling that there is something wrong with that particular system. Could be no solvent in the washer, fuse, wiper motor bad, heated windows

    Apr 25, 2011 | 1997 Dodge Caravan

    1 Answer

    My 1999 dodge caravan with 3.3 liters engine shows engine trouble codes P0700 and P0740 . How do you fix this problem?

    both codes are transmission related codes,you need to have a transmission shop run a check on the curcuits

    Dec 09, 2009 | 1999 Dodge Caravan

    1 Answer

    Engine stalls after it has been raining heavy. p0508 code then next day it runs fine

    P0508 Idle Air Control Circuit Low.
    This means that the Idle Air Control Circuit input is below acceptable limits.
    You need to test the Idle Air Control (IAC) valve, the wiring between the IAC and the PCM and made sure the IAC passages in the throttle body are clean.

    Your PCM unit may actually be faulty and letting moisture in

    Sep 08, 2009 | 2004 Dodge Ram 1500

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    2004 Dodge Caravan check engine light is on

    P0406 is egr positon high replace the egr valve and se if the light comes back on for the miss fire on cylinder 4

    Jun 19, 2008 | 2004 Dodge Caravan

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