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Check Engine Light, code P2571

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E-Class (W212) 2010 - 2016: E 350, E 550

Check Engine Light, code P2571

 
Old 07-10-2019, 07:51 PM
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Check Engine Light, code P2571

I have a 2011 E350, recently got a check engine light, I scan the car with my handle OBD2 scanner come back as code P2571,
maybe from a sensor in the radiator and seems like an uncommon problem for W212,
one post I found on Benz World mention that it's causing by after market HID kit, which I have, but it's a quality unit from MTEC.
I try reset the code with my scanner, it went away for two weeks and just came back yesterday, so I think the problem is legit.
Meanwhile, car drives perfect, doesn't feel like anything is wrong.

so I want to see anyone has any experience on that, any input will be appreciated.
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Old 07-11-2019, 12:51 PM
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Call the manufacturer of the lights and see what they have to say. If anyone has experience with this p-code, it will be them.
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Old 07-16-2019, 11:42 PM
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Originally Posted by cx876 View Post
I have a 2011 E350, recently got a check engine light, I scan the car with my handle OBD2 scanner come back as code P2571,
maybe from a sensor in the radiator and seems like an uncommon problem for W212,
one post I found on Benz World mention that it's causing by after market HID kit, which I have, but it's a quality unit from MTEC.
I try reset the code with my scanner, it went away for two weeks and just came back yesterday, so I think the problem is legit.
Meanwhile, car drives perfect, doesn't feel like anything is wrong.
look at the difference between OBD1 and OBD2 scanners in autoguysland website. Autoguysland give some benefits and difference of them
so I want to see anyone has any experience on that, any input will be appreciated.
Have you use another scanner tool to check again and see any code ??
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Old 07-17-2019, 12:06 PM
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Old 07-17-2019, 01:50 PM
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Consider having someone pull codes using MB DAS (diagnostics) could be related to exhaust oxygen sensor(s).

FYI temperature sensor referenced is for PZEV vehicles (data card will list code 917):
- 211 PZEV = 2115420918
- 212 PZEV = 2219055600 (350 in diagram)


Last edited by konigstiger; 07-17-2019 at 02:16 PM.
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Old 07-17-2019, 04:59 PM
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Hey guys, sorry for the late update, thanks konigstiger, that's the sensor that I originally thinking about.

But here's what happened,
the day after I post this thread (7/11), I drove my car to work, to lunch and back (less than 9 miles total),
and when I pick up my car after work, the CEL is gone as soon as I started the engine, and it haven't comes back till today (knock on wood)

do you guys think I should bring it to the shop nonetheless just in case ? or just the sensor acting funny and I shouldn't worry about it until it light up for the 3rd time ?

Thanks everyone.
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