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Could anyone help with pinpointing the possible issues for a P1513 OBDII fault code; ie- DISA Control Circuit Signal High.
I have a cracked air duct between the Radiator and the Air filter housing, could this be the root cause ?
I also recently fitted a new aftermarket Air Valve which didn't fit quite as snugly as the old one - could this be the most likely cause of the production of the fault code ?
 
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