lopezram

Help Needed: BMW 4 Series Jerking and Low Power Issues

I own a 2015 BMW 4 Series with a gasoline engine and 101,000 km (approximately 62,761 miles) mileage. Recently, I've been experiencing jerking on acceleration and an unsteady engine. After a charge pipe flange failure at the throttle connection, I replaced it with a new aluminum pipe. However, now the car seems to be in limp mode with low power, as if the turbo isn't boosting, and there's some backfiring. I'm getting several error codes: 108001 (intake air temp sensor or MAP sensor?), 108F01 (intake plenum leak), cylinder misfire, 120308 (charging pressure control, plausibility pressure too low), and 102001 (air mass plausibility, air mass too high). Additionally, there's a fault memory entry indicating 'Send buffer full.' I've reset the codes but haven't driven the car since. I plan to replace the MAP and MAF sensors soon. Any suggestions or ideas on what might be causing these issues would be greatly appreciated!

A 2015 BMW 4 Series is experiencing jerking during acceleration and low power, potentially due to a turbo boost issue. The problem began after replacing a failed charge pipe flange with an aluminum pipe. Error codes suggest issues with the intake air temperature sensor, intake plenum leak, cylinder misfire, charging pressure control, and air mass plausibility. Suggested solutions include checking for vacuum leaks around the intake plenum and charge pipe connections, ensuring all clamps and hoses are secure, and replacing the MAP and MAF sensors.

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Start by checking for any vacuum leaks, especially around the intake plenum and charge pipe connections, as these can cause the symptoms you're experiencing. Ensure all clamps and connections are secure and there are no cracks or loose hoses. After addressing any leaks, clear the codes and take the car for a test drive to see if the issues persist. Let me know how it goes or if you have any further questions!

Thanks for your recommendation, I change the MAP sensor just before the throttle body not on the manifold and then found the boot on the charge pipe after intercooler partially dislodge. Reset the fault codes and test drive. All cks are good and good power. Thanks.

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BMW

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