I have a 2012 BMW 650i. I had ARM downpipes installed, ARM cold air intake and finally,2 turbosmart diverters. When I hit the gas hard, the car...

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Customer

I have a 2012 BMW 650i. I had ARM downpipes installed, ARM cold air intake and finally,2 turbosmart diverters. When I hit the gas hard, the car goes limp and immediately jumps to drivetrain malfunction, and when I hit the OK prompt on the idrive it goes fast again but when it tries to boost again, i lose power and drivetrain malfunction comes back

Last updated
Relly De Jesus
BMW Mechanic

Hello and welcome to ExpertHelp.com! My name is Relly De Jesus and I'm going to do everything in my power to answer your question to your full satisfaction!

Before we get started, I want to remind you ExpertHelp.com is an independent professional support company. We are not associated with BMW nor are we paid to provide support on their behalf. However, we have helped hundreds of customers with similar questions and believe we can help you too. OK, let’s get started! :)

I’m available to chat now. Please let me know that you are ready by posting a response. I’ll leave my chat session open for the next 15 minutes or so and wait for your reply. If I don’t catch you this time, please respond with a few times (including your timezone) that work best for you and we can connect then.

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Relly De Jesus
BMW Mechanic

Hello Vijay

How are you doing? Can you access the car at the moment? Please remove the negative battery connector and let it sit for 5 minutes before reconnecting it. Keep the engine warm and running and try to give it a spin. Sometimes the computer needs to relearn for it be able to adapt on the upgrades you installed. Hope this helps and I'll be standing by for your response. 

Thank you

Relly

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Customer

Hi Relly, I dont have my car till friday, I am having a JB4 installed as well as tires with a mount and balance, I can defintley try that and se if that works on Friday.

 

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Relly De Jesus
BMW Mechanic

Hello Vijay

Hope everything is well. Any update on the car? I'll be standing by for your reponse.

Thank you

Relly

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Relly De Jesus
BMW Mechanic

Hello Vijay

Hope everything is well... Is there anything else I can add or help you with? I'll be standing by for your response. Have a good one!

Thank you

Relly

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Customer

Hi Relly,

that did not solve the problem. My upgrades are basic and does not require injector upgrades or so fourth. I'm not sure why I'm still having this problem?

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Relly De Jesus
BMW Mechanic

Hello Vijay

Good to hear back from you. May I ask if  you have an OBDII scanner so that we will know the fault code and replace the necessary sensor/parts to resolve the issue.

Ill be standing by for your response.

Thank you

Relly

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Customer

These are the codes I have..Codes

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Customer

Codes

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Customer

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Customer

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Relly De Jesus
BMW Mechanic

Hi Vijay

These are the possible things that needs to be looked at and replace to resolve the issue.

1. Code 12A202 - Oxygen sensor replacement.  The oxygen sensor of your car measures the amount of oxygen in the exhaust gasses that exit the engine. It sends real-time data about the amount of unburnt oxygen in the exhaust system to the engine's computer to determine the correct air-to-fuel ratio for the car's engine. Below is what it looks like.

2. Code 107001 - These are the things that needs to be checked

- Check wiring harness from DME to boost-pressure sensor and intake-manifold pressure sensor

- Check intake system and crankcase for leakage

- Perform learning routine for throttle-valve travel stops

The fault is recognized when the calculated mass flow rate through the throttle valve is higher than the calculated mass flow rate into the cylinders on Bank 2 by 65 %.

Problem Source (s) 

- Measured intake-manifold pressure (absolute) too high

- Vacuum/air leak within induction tract/crankcase

- Incorrect throttle-valve angle

- Pressure sensor defective Terminal condition: Terminal 15 Voltage condition:

- Electrical system voltage > 10 V

Temperature condition: Coolant temperature > -10 °C -

-10°C < intake-air temperature < 90°C

3. Code 102D02 - Mass Air Flow issue. Low mass air flow readings do not mean the sensor is bad. A clogged up air filter or plugged catalytic converter can also cause lower air flow sensor readings. Vacuum leaks affect air flow sensor readings too. That's why mechanics use a known-good sensor to compare the readings

You can start on these issues for the mean time and I believe that there will be good changes on the bimmer's performance. Hope this helps and I'll be standing by for your response.

Thank you

Relly

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