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I have a P0410 code?

Tiny
ZUBACD638
  • MEMBER
  • 2003 MERCEDES BENZ E240
  • 2.6L
  • V6
  • 2WD
  • AUTOMATIC
  • 124,000 MILES
Hello, I have a P0410 code on my 2003 Mercedes-Benz E240 W211. While I was checking for any issues, I found that this hose was cracked. I was wondering if it could be the cause of the check engine light.
Friday, November 8th, 2024 AT 11:29 AM

4 Replies

Tiny
ZUBACD638
  • MEMBER
  • 5 POSTS
A leak like this.
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Friday, November 8th, 2024 AT 1:19 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Yes, the code is for the secondary air injection malfunction and that hose goes to the system diverter valve. I would replace that vacuum line and then clear the codes. Let me know if that fixes it.
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Friday, November 8th, 2024 AT 4:48 PM
Tiny
ZUBACD638
  • MEMBER
  • 5 POSTS
Well, due to the mechanics not working through the weekend, I temporarily taped it up with electrical tape. The check engine light went away on its own before that. While I was researching how the secondary air injection works, I figured out that it only activates when the engine is cold. It helps warm up the catalytic converter in the first 40 seconds of the engine running for emission regulations. This morning, when I turned on my car, no check engine light appeared, so the electrical tape seems to be doing its job for now. Of course, I will replace the hose on Monday. I have a follow up question. Is it possible that there were no check engine lights this summer because it was warm, and there was no need for the secondary air injection to activate?
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Saturday, November 9th, 2024 AT 6:11 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Yes, that is correct. I would replace the hose and then clear the codes, and the problem should be fixed.
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Saturday, November 9th, 2024 AT 10:49 AM

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