Hi I have this ecu magneti marelli that is a customers of mine and he gave it to me to take a look, he believes that the ecu is faulty because when he plugs the ecu on the car after a few minutes it's pulling a code for the map sensor and when he disconnect the ecu and reconnect it it works just fine for a few minutes, he said that has check everything else and replace everything necessary besides ecu , I did open the ecu but no damage was spotted by eye can anyone help me if had similar issue or maybe needed software upgrade

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