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      07-06-2017, 07:16 AM   #1
CTNYCLurk
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Code 120208 120408

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. I've also checked and replaced two vacuum hoses with silicon hosing. I get a drivetrain malfunction around 80 MPH driving on the highway and its basically decreased throttle response, and with the replacement of the new part, it now kicks in around 100 on the highway.

I was reading the action in service below, and it says replace charging pressure sensor. My question is, which pressure sensor is in question from the two pics below, is it the one mounted on the intake manifold, or the one mounted on the chargepipe? I see they are the same part number anyway

Can anyone provide some insight

Thanks!
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      11-13-2017, 01:47 PM   #2
Felipillo
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Question

Hello, the one on the intake manifold reads atmospheric pressure as soon you turn your key into ON position and the other one measures the turbo pressure, it is very unlikely to fail. i will switch them the one on the intake manifold with the one on the pipe as they have the same part number. it should give you a different DTC.

let me know what happend. cheers
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      11-14-2017, 08:15 AM   #3
CTNYCLurk
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Quote:
Originally Posted by Felipillo View Post
Hello, the one on the intake manifold reads atmospheric pressure as soon you turn your key into ON position and the other one measures the turbo pressure, it is very unlikely to fail. i will switch them the one on the intake manifold with the one on the pipe as they have the same part number. it should give you a different DTC.

let me know what happend. cheers
ended up being a totally separate issue, a bent wastegate actuator rod. got that fixed and car is running strong now
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      11-15-2017, 02:28 PM   #4
Felipillo
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Quote:
Originally Posted by CTNYCLurk View Post
ended up being a totally separate issue, a bent wastegate actuator rod. got that fixed and car is running strong now
Nice to hear.
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      11-23-2020, 12:37 AM   #5
pamfi
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Hello, I have the same problem with a BMW 328i, can you give me more details on troubleshooting?
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      04-29-2023, 07:38 PM   #6
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Quote:
Originally Posted by CTNYCLurk View Post
ended up being a totally separate issue, a bent wastegate actuator rod. got that fixed and car is running strong now
I'm having the same codes as you and same symtpoms.
How did figure out it was a bent wastegate actuator rod, how did you fix it and how much was the cost?

Some people are saying it requires taking out the turbo to replace it?
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