Hellshalfacre
2005, 2500
Hi all. First post on here. Having an issue with a 2005 Freighliner sprinter I just bought with 94k miles. The van runs great but I have this issue where the CEL will illuminate and throw p0106 after cranking before the engine starts. I can shut down, clear the code and drive 250 miles with no CEL. Then let the van sit overnight and I get p0106 again upon cranking. Also I'm unable to erase this code with my cheap scanner. I erase the code and the CEL goes out but the scanner still recognizes the fault being present. The snapshot function on said cheap scanner showed the MAP sensor at nearly 28inhg at the time of the fault(s)which is what it will read unplugged.
Things I've tried: checked charge air hoses, resonator for leaks. Saw a bunch of soot around the MAP and IAT sensor housing so I pulled the MAP sensor and found the oring was cut in half. Replaced with a 4mm oring with no change. Question is; do these Bosch Map sensors have a history of failing in this way? If it was the sensor or wiring I would think I would get the CEL all the time. Likewise if there were truly a charge air issue I would think the van would run like crap. My issue appears to related to cranking which just sounds wacky to me. Any info or help would be appreciated.
Things I've tried: checked charge air hoses, resonator for leaks. Saw a bunch of soot around the MAP and IAT sensor housing so I pulled the MAP sensor and found the oring was cut in half. Replaced with a 4mm oring with no change. Question is; do these Bosch Map sensors have a history of failing in this way? If it was the sensor or wiring I would think I would get the CEL all the time. Likewise if there were truly a charge air issue I would think the van would run like crap. My issue appears to related to cranking which just sounds wacky to me. Any info or help would be appreciated.