It could be a high/low ICP code too. I get it at high load/boost sometimes. plan on getting an Adrenaline HPOP this summer if funds and time permit.... I did a post about it in the Minotaur forum somewhere P1211. First time I got it I thought it was an overboost code too till I checked it with AE
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Back after many years.
2003 F250 CC LB 4x4 7.3PSD
Minotaur user.
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