Code P1660
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1st Gear
Joined: Jun 2022
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Code P1660
How would y’all go about code P1660 Output Circuit Check Signal High I’ve been told to replace the pcm but I’m not too sure where I could get a new one or if there’s a fix that doesn’t require replacing the pcm could reflashing possibly work?
1997 F250HD 7.3 Powerstroke
1997 F250HD 7.3 Powerstroke
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Joined: Oct 2003
Posts: 17,799
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From: Ashland City, TN
Based on my quick look around as I had never heard of this.
It seems like its more IDM related than PCM related.
But somewhere there is an over voltage in the system causing the fault.
So, I would probably start with the IDM as its a big voltage regulator, so if its going bad, it might be pushing bad voltage to the injectors.
It seems like its more IDM related than PCM related.
But somewhere there is an over voltage in the system causing the fault.
So, I would probably start with the IDM as its a big voltage regulator, so if its going bad, it might be pushing bad voltage to the injectors.
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