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P1239 Diagnostic Trouble Code Discussion for March 2018

Engine Oil Temperature Too Low


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Trouble Ticket Help Requests for DTC P1239
Help Request Posted
2009 Mercedes-Benz R320 Bluetec 3.0L Cuts out, Cuts out VIN: 4JGCB25E59
P1239: The positive control deviation during boost pressure control is too high. Vehicle loses boost pressure when driving and goes into limp mode, happens around 3rd gear when accelerating. Smoke tested intake system, no leaks found. Removed the air filter to check for clog none found. Boost pressure with vehicle as it came in was 1942 hP...
March 26, 2018
2009 Mercedes-Benz R320 Bluetec 3.0L Cuts out, Cuts out VIN: 4JGCB25E59
P1239: The positive control deviation during boost pressure control is too high. Vehicle loses boost pressure when driving and goes into limp mode, happens around 3rd gear when accelerating. Smoke tested intake system, no leaks found. Removed the air filter to check for clog none found. Boost pressure with vehicle as it came in was 1942 hP...
March 28, 2018