jerry999 Posted April 16, 2013 Report Share Posted April 16, 2013 Hello! I got some problem with my Vipec V44 on my subaru impreza. I got a few ECU fault codes. and wounder what they mean. ECU fault code 23: An volt 5 below error low value? ECU falut codes 20: an volt 4 below error low value? // Jerry Quote Link to comment Share on other sites More sharing options...
Simon Posted April 17, 2013 Report Share Posted April 17, 2013 This indicates that either the inputs are at a voltage level below the fault settings for example a short to ground. Or it could be they are not connected and have not been turned off or it could be the error / fault settings are incorrect. I assume you have a plugin unit. What model Subaru? Quote Link to comment Share on other sites More sharing options...
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