Codes P22827A and P22797A?

2015 MERCEDES BENZ C180
75,000 MILES
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HSNDSOME
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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
Apr 11, 2025 at 5:03 PM
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STRAILER
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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.
Apr 13, 2025 at 10:51 AM
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HSNDSOME
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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.
Apr 13, 2025 at 6:16 PM
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HSNDSOME
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Also to mention P119012 code but i sorted it out.
Apr 14, 2025 at 2:29 AM
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STRAILER
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Where is the MAF sensor in these pictures I don't see it? Did you look for the leak between the two?
Apr 14, 2025 at 9:56 AM
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HSNDSOME
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Yes, did a smoke test.
Apr 14, 2025 at 8:33 PM
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HSNDSOME
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Not finding any leaks, would you advise removing the throttle body and inspecting the gasket and also doing a cleaning.
Apr 15, 2025 at 2:58 AM
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STRAILER
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Yes, that would be the next step.
Apr 15, 2025 at 9:33 AM
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HSNDSOME
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Thanks will keep you updated.
Apr 15, 2025 at 1:32 PM
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STRAILER
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Sounds good, have a nice weekend.
Apr 17, 2025 at 8:41 AM
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HSNDSOME
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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.
Apr 18, 2025 at 5:13 PM
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STRAILER
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If there are no leaks, I would replace the MAF sensor and clear the codes once completed.
Apr 19, 2025 at 10:06 AM
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HSNDSOME
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Trying to figure our where is the MAF sensor located.
Apr 20, 2025 at 10:33 AM
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STRAILER
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It should be in the intake tube before the throttle body.
Apr 20, 2025 at 11:19 AM
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HSNDSOME
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Photos of engine.
Apr 21, 2025 at 6:01 AM
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STRAILER
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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.
Apr 21, 2025 at 9:58 AM
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HSNDSOME
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The sensors on the left is TEMPERATURE SENSOR; AT CHARGING AIR INTERCOOLER.
The sensor on the right is PRESSURE TRANSMITTER AT CHARGING AIR INTERCOOLER.
May 5, 2025 at 5:06 PM
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HSNDSOME
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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.
May 5, 2025 at 5:08 PM
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STRAILER
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We just got a new smoke machine, it works get. let me know what you find.
May 6, 2025 at 10:17 AM
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HSNDSOME
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Yes I will I recently purchased a new one as well. Thanks much for your response.
May 6, 2025 at 3:03 PM
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HSNDSOME
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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.
May 8, 2025 at 8:39 AM
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STRAILER
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Can you upload an images so I can see the leak?
May 8, 2025 at 10:47 AM