Codes P22827A and P22797A?

Tiny
HSNDSOME
  • MEMBER
  • 2015 MERCEDES BENZ C180
  • 75,000 MILES
I performed a scan and these codes P22827A and P22797A are showing up. I did a smoke test and found everything to be good, no leaks. I was thinking about the PCV valve but I'm not sure. Any further assistance will be appreciated. Thanks
Friday, April 11th, 2025 AT 5:03 PM

21 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 51,615 POSTS
Did you check the air intake boot/tube between the throttle body and MAF sensor, this is where the leak will be not the intake manifold.

Code: P22827A Air system leak between MAF and throttle body

Code: P22797A Intake air system leak - air leakage detected

I would remove the air tube and MAF and look for a broken seal or a spilt tube. Please upload pictures or videos in your response of any problems.
Was this
answer
helpful?
Yes
No
-1
Sunday, April 13th, 2025 AT 10:51 AM
Tiny
HSNDSOME
  • MEMBER
  • 27 POSTS
M274 is the model engine. Photos of the engine and diagnostic scan codes. When zoom in the photos there are 2 sensors opposite to each other before the throttle body. So it's 2 sensors, the throttle body and then intake manifold.
To note throttle body bolts directly on the intake manifold.
Images (Click to make bigger)
Thumb
Thumb
Thumb
Thumb
Thumb
Was this
answer
helpful?
Yes
No
Sunday, April 13th, 2025 AT 6:16 PM
Tiny
HSNDSOME
  • MEMBER
  • 27 POSTS
Also to mention P119012 code but I sorted it out.
Was this
answer
helpful?
Yes
No
Monday, April 14th, 2025 AT 2:29 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 51,615 POSTS
Where is the MAF sensor in these pictures I don't see it? Did you look for the leak between the two?
Was this
answer
helpful?
Yes
No
Monday, April 14th, 2025 AT 9:56 AM
Tiny
HSNDSOME
  • MEMBER
  • 27 POSTS
Yes, did a smoke test.
Was this
answer
helpful?
Yes
No
Monday, April 14th, 2025 AT 8:33 PM
Tiny
HSNDSOME
  • MEMBER
  • 27 POSTS
Not finding any leaks, would you advise removing the throttle body and inspecting the gasket and also doing a cleaning.
Was this
answer
helpful?
Yes
No
Tuesday, April 15th, 2025 AT 2:58 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 51,615 POSTS
Yes, that would be the next step.
Was this
answer
helpful?
Yes
No
Tuesday, April 15th, 2025 AT 9:33 AM
Tiny
HSNDSOME
  • MEMBER
  • 27 POSTS
Thanks will keep you updated.
Was this
answer
helpful?
Yes
No
Tuesday, April 15th, 2025 AT 1:32 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 51,615 POSTS
Sounds good, have a nice weekend.
Was this
answer
helpful?
Yes
No
Thursday, April 17th, 2025 AT 8:41 AM
Tiny
HSNDSOME
  • MEMBER
  • 27 POSTS
Remove throttle body and intake manifold Inspect gaskets, hoses, wire harness and Jack's. Clear all codes and test drive. But code P22827A popped up again.
Was this
answer
helpful?
Yes
No
Friday, April 18th, 2025 AT 5:13 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 51,615 POSTS
If there are no leaks, I would replace the MAF sensor and clear the codes once completed.
Was this
answer
helpful?
Yes
No
Saturday, April 19th, 2025 AT 10:06 AM
Tiny
HSNDSOME
  • MEMBER
  • 27 POSTS
Trying to figure our where is the MAF sensor located.
Was this
answer
helpful?
Yes
No
Sunday, April 20th, 2025 AT 10:33 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 51,615 POSTS
It should be in the intake tube before the throttle body.
Was this
answer
helpful?
Yes
No
Sunday, April 20th, 2025 AT 11:19 AM
Tiny
HSNDSOME
  • MEMBER
  • 27 POSTS
Photos of engine.
Images (Click to make bigger)
Thumb
Thumb
Was this
answer
helpful?
Yes
No
Monday, April 21st, 2025 AT 6:01 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 51,615 POSTS
I need better images of the engine intake but I marked where I think the sensor is. Check out the images (below). Let us know what you find.
Image (Click to make bigger)
Thumb
Was this
answer
helpful?
Yes
No
Monday, April 21st, 2025 AT 9:58 AM
Tiny
HSNDSOME
  • MEMBER
  • 27 POSTS
The sensors on the left is TEMPERATURE SENSOR; AT CHARGING AIR INTERCOOLER.
The sensor on the right is PRESSURE TRANSMITTER AT CHARGING AIR INTERCOOLER.
Was this
answer
helpful?
Yes
No
Monday, May 5th, 2025 AT 5:06 PM
Tiny
HSNDSOME
  • MEMBER
  • 27 POSTS
Will completely remove the throttle body, intake manifold and PCV valve a check. Will go through all seals and hoses. Also, the turbo lines and other hoses will double check. Will try back a smoke machine.
Was this
answer
helpful?
Yes
No
Monday, May 5th, 2025 AT 5:08 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 51,615 POSTS
We just got a new smoke machine, it works get. Let me know what you find.
Was this
answer
helpful?
Yes
No
Tuesday, May 6th, 2025 AT 10:17 AM
Tiny
HSNDSOME
  • MEMBER
  • 27 POSTS
Yes I will I recently purchased a new one as well. Thanks much for your response.
Was this
answer
helpful?
Yes
No
Tuesday, May 6th, 2025 AT 3:03 PM
Tiny
HSNDSOME
  • MEMBER
  • 27 POSTS
After removing the intake manifold I noticed there is an oil leak in the crankcase area where the oil dip stick does bolt on the block.
Actually where the dipstick bolts on the block is dry the oil leak is lower.
Was this
answer
helpful?
Yes
No
Thursday, May 8th, 2025 AT 8:39 AM

Please login or register to post a reply.