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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SYMPTOM
P0508-IAC VALVE SENSE CIRCUIT LOW

WHEN MONITORED
Engine running. Battery voltage greater than 10 volts .

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

POSSIBLE CAUSES

  • 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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    • 81 Answers

    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 .

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