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Hello, I have a 2007 Mazda 6I sedan. When I start it up it acts sluggish to start and then the traction light the TCS off light and the check engine light are on. I put a scanner and it reads a code. That is P0103. Which states that the mass or volume circuit is high. I looked it up and it says is the mass airflow sensor I ordered it but I realized that my aftermarket eBay intake has two open ports and I only have one hose connected. I just supposed to be two hoes connected. Am I missing one please let me know. I have attached the images of what I am talking about. Thank you in advance.
You have an aftermarket so called CAI. You should have first checked and confirmed that the mass airflow sensor had actually failed and not just needing to be cleaned both the sensors and the connector.
Because you have an un-named CAI I recommend that you go to the supplier where it came from and review their recommended installation for it which should include any and all hoses and sensors. You may have a problem if it was a UNIVERSAL CAI for how to correctly install the system replacing the factory air box.
Because it is universal they often have several hose and sensor adapter location so they fit many applications. The location you pictured are negative are pressure or for some would know it better as breather hose attachments.
One of the causes for sensor activation with a universal badly designed CAI is running several degrees hotter during (hence not a CAI intake) low % throttle position. So you part that you assumed to be bad may only be reporting the limits of the specification to the ECU.
I suggest in the future to scan all the area's of your ECU and not just the current DTC. There is other information available when you scan that is important when diagnosis an issue that is reported by the ECU. And never just assume that the DTC you get is absolute, do the diagnostic work which is not going to the internet for the definition of the DTC and "possible" causes.
Hello, thanks for the information. The CAI is specifically for the Mazda I didn’t buy a universal one. This came with the outlet for the sensor and everything and it did come with the hose but I never knew where it is supposed to be connected. I’ve seen videos and pictures on YouTube where some didn’t have the hose hooked up either but I guess that was just for the installation. I’ve had the CAI installed for about a month and I’m only now getting this issue. I have ordered a new premium Mass airflow sensor and should be here tomorrow so I’m hoping that’s the issue.
Hello, thanks for the information. The CIA is specifically for the Mazda I didn’t buy a universal one..
May I ask what brand that CAI brand yours is?
You need a Breather hose from the valve cover to the air filter tubing . If left open as not plugged, then you may have contaminated your MAS/MAP and also the IAT sensors'. Any hose before the Throttle body are negative air pressure not positive which is created after the throttle body. If not connected and left open then your PCV (positive crankcase) system can not work properly.
FYI part basic regarding most all performance aftermarket parts if it were model specific it would have come with installation instructions unlike basic universal parts and kits that do not come generally come with any installation instructions or are generic in instructions
I do not know the exact brand as to it really came with the car from the person I bought it from. Where is the connector for the outlet for the breather hose on valve cover exactly located? I will go to a local store and get the hose and connect and see as well. Also when I get off of work I will look at the brand.
Im still a bit confused lol. Engine set up looks kind of different but in the picture if the intake that’s installed itself the hose seems to be running downwards. I uploaded a video. Could that be it ?
Disclaimer. All references to what a part is, and http of a parts supplier part are for examples only. They may not necessarily be the exact part and fitment.
Last edited by Callisto; Dec 21, 2024 at 01:23 PM.
You sent a picture with just a sticky note saying what it says and the guy pointing at the connection But from the picture it looks like my engine bay is different. In the picture from the CAI that the guy bought and installed in the Mazda I have now it shows the hose running from the intake downwards not behind of the engine. I attached a video of what a video of an outlet I found down in that area so I was asking if you think this is the outlet the hose is supposed to be connected to. I will place the image but please view the video if you can.
The picture are of my engine. I made the post it for you. And the breather hose is fundamentally connecting the same on most all Mazda engine of this type. Specifically, Skyactiv. Don't try to look so into that my valve cover for the breather is in a l have sightly different location for the breather hose as you valve cover that is also why I posted actual replacement parts for your exact reference.
Because aftermarket air intake/filter kit maybe you should use this to find you exact hose location and where it may connect to your CAI or wait until you find the brand and hope they have an installation instruction to follow for you?
There is no video posted by you available for my viewing?
Sorry my resources which is ALLData are not available to me at my home only the shop so I have limited exact information at times for specific locations of some parts? So unless I have empirical information of first hand experience with the eact application I can only give basic information.
Mass air flow
