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30 Οκτ 2016 · Next day scanned and found codes 120208 (charging pressure control, plausibility pressure too high) and 120408 (charging pressure control, deactivation: pressure build-up blocked. Car history: before selling the car last owner took it to BMW, changed oil and filters, rear tires and spark plugs.
Hello, I've got the following two codes. 120208 Charging pressure control; plausibility Pressure too high. 120408 Charging pressure control; Switch-off as consequence. I've thrown a new wastegate pressure converter in the car, but still have the code, it was weird.
According to the content of the site you mentioned, it appears to be an error in the electronic part or a error in the charging pressure sensor. After the warning lamp has occurred, there has been continuous 2 to 3 high rpm and high speed driving, but there will be no warning lamp again.
28 Οκτ 2016 · The vacuum lines to the pressure converter were installed backwards. This causes vacuum pressure to not release and the boost pressure too high fault as well as the deactivation fault are stored. Reverse the lines at the pressure converter and this will correct your problem.
120208 - Plausibility pressure too high. I have an F25 with the notorious N20 engine. Recently I had the timing chain kit done on the car and right after that I started getting 120208 - Plausibility pressure too high. It happens only on the highway and I can reproduce it consistently now.
8 Οκτ 2020 · The codes that are present are: 120208, 120408 and 12152f. The wastegate on the old turbo was in very rough shape and could have been part of the issue. However the reman should have taken care of it.
N55 Boost Solenoid Replacement F10 535iWas getting a boost too high (120208) when cruising or going up hill.
