Never ending P0410, P0171, P0174 - Mercedes-Benz Forum
 
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post #1 of 8 (permalink) Old 06-09-2019, 10:13 AM Thread Starter
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Never ending P0410, P0171, P0174

Ive had these codes for months now. I have replaced the MAF sensor, the secondary air pump, all the lines from the air pump to the check valves, and I've replaced both check valves. The codes keep coming back. Ive gotten a vacuum test to test for leaks and no leaks. Has anyone else had the same issue?
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post #2 of 8 (permalink) Old 06-09-2019, 11:45 AM
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Ive had these codes for months now. I have replaced the MAF sensor, the secondary air pump, all the lines from the air pump to the check valves, and I've replaced both check valves. The codes keep coming back. Ive gotten a vacuum test to test for leaks and no leaks. Has anyone else had the same issue?
For the money you have spent plying parts darts you could have bought complete turn key CF52 + MB Star C4 SD Connect + SSD.

https://www.aliexpress.com/item/CF52...AbTest=ae803_5

Is air pump running after cold start?

1972 280SEL 4.5
1999 ML320
2000 E320
2003 ML350
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post #3 of 8 (permalink) Old 06-09-2019, 12:13 PM Thread Starter
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yes, the air pump runs.
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post #4 of 8 (permalink) Old 06-09-2019, 12:33 PM
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yes, the air pump runs.
Do you have vacuum pump with gauge?

1972 280SEL 4.5
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post #5 of 8 (permalink) Old 06-09-2019, 12:36 PM Thread Starter
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i do not but i had this test run on it with no issues.
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post #6 of 8 (permalink) Old 06-09-2019, 12:51 PM
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i do not but i had this test run on it with no issues.
So, why is P0410 still there?

1972 280SEL 4.5
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post #7 of 8 (permalink) Old 06-09-2019, 04:29 PM Thread Starter
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So, why is P0410 still there?
I have no idea
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post #8 of 8 (permalink) Old 06-09-2019, 04:42 PM
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I have no idea
Go to the top of this forum and hit custom Google search with "P0410" Plenty of reading.

Please update your user profile with car and location info. If you are using mobile device look here. https://www.benzworld.org/forums/w16...l#post17015001

Order vacuum pump. https://www.amazon.com/MV8000-Automo...ateway&sr=8-43

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