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Trying to find out what these codes mean: 1 - No DTC

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Trying to find out...

Trying to find out what these codes mean:

Mechanic's Assistant: Okay, I'll connect you to the mechanic to go over that information regarding your BMW. Before I do, is there anything else you want him to know?

1 - No DTC definition found; 176 - Internal Index 174; 105 - Plausibility Engine Temperature; P1434 - No DTC definition found.

Submitted: 8 months ago.Category: BMW
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Answered in 9 minutes by:
11/30/2017
BMW Mechanic: Steve, BMW Expert replied 8 months ago
Steve
Steve, BMW Expert
Category: BMW
Satisfied Customers: 25,933
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are these from an obd reader?
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Customer reply replied 8 months ago
Not sure. I went to an auto parts store to have them read the codes. My car is a 2002 BMW M3. This is the third time my service engine light turned on in the past 4 months. In the past I just bring it in to have it repaired, but now I'm not confident if they're really fixed it or it's just my bad luck that something new each time.
BMW Mechanic: Steve, BMW Expert replied 8 months ago

the same code scan gave you 3 and 4 digits codes?

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Customer reply replied 8 months ago
That is correct
BMW Mechanic: Steve, BMW Expert replied 8 months ago

Please do not forget to click a positive rating as this is the only way I receive credit for my answer, thank you

176 and P1434 are the smae thing, both point to a failed DMTL pump (fuel tank leakage test pump) or possibly a leak in the fuel system.
175 is a fuel related code but unfortunately is very generic. could be due to an air leak, bad fuel pump, bad airflow sensor, etc. more testing will need to be carried out given the generic nature of this code.
if you need a good non dealer option to cut down on costs, check out www.bimmershops.com or www.bimrs.org for options.

Please let me know if you have further questions. Please do not forget to click a positive rating as this is the only way I receive credit for my answer, thank you. Best wishes with your vehicle.

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