ISX15 CM2250 IMAP sensor erratic, intermittent or incorrect

[dhirocz]

Sounds like an intermittent issue caused by something like a bad pigtail to the sensor. I'd replace the pigtail using appropriate wiring repair (lineman's knot/solder/adhesive heatshrink) and maybe replace the sensor. I replaced mine and keep the old but still functioning sensor in the truck as a spare.

Could also be an issue in the circuit further down the line as well.