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MAF Sensor code-CEL

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    has anyone come across a problem with the check engine light staying on after putting an aftermarket intake on their tC? I bought a new sensor for it thinking that the guy I had install it wasn't careful enough with it but when I reset the battery after putting the new sensor on the light came back on again with the MAF sensor code popping up again. Any advice is appreciated... It was a pain in the ass to get the intake off and on again so i'm trying to see if it might be an easier fix.. I have VEIP that needs to be done asap
    • Edited 1 times, last by byronthecarguy on .
    samantham712 wrote:
    Mar 26, 2014 8:50:07 pm
    has anyone come across a problem with the check engine light staying on after putting an aftermarket intake on their tC? I bought a new sensor for it thinking that the guy I had install it wasn't careful enough with it but when I reset the battery after putting the new sensor on the light came back on again with the MAF sensor code popping up again. Any advice is appreciated... It was a pain in the ass to get the intake off and on again so i'm trying to see if it might be an easier fix.. I have VEIP that needs to be done asap




    You don't need to make a new thread. The problem is you bought an eBay CAI and now that is setting off you CEL there is no fix unless unless you buy an aftermarket ECU and eliminate the light. To turn CEL ( limp mode) off you need to replace the factory intake and purchase a reputable CAI and do some research, the problem is the MAF is not reading the air flow correct. I told you what you can get as aftermarket . There are no more answers.

    Edit: also you can run in limp mode but your MPG will go down because your running rich. This is normal because the engine thinks there is a problem and doesn't want to run lean. The down side is if oh run in limp mode for a long time you will foul out your plugs and build up carbon deposits on your valves and clog the injectors and could mess up your CAT or O2 sensors . Remember to never buy cheap or your going to have problems.
    • Edited 4 times, last by samantham712 on .
    Ok well you don't have to hunt down every post I make. I'm allowed to ask for different opinions right? I've heard lots of different things, and small fixes such as seat placement of the MAF sensor. I'm obviously not an expert but I do take pride in my car and love to learn any and everything from anyone. Leave if it bothers you.

    And by the way, for 2010 Scion tC's TRD does make COLD AIR intakes ;)
    Hey I'm just trying to help, if you want to post the same thread over and over again then by all means go on and also raise dead posts from 2005 lol but the help your looking for you probably won't get since I'm one of the few around here that actually knows how to work on engines and we'll everything else. But good luck with your search.
    I brought up a dead post because I obviously don't use this website all the time so I didn't know when it was made until after I posted, thanks
    Damn dude u s$@k. Anyways samantha i found this,

    Shift_N_Red wrote:
    The SRI changes the velocity of the air traveling past your MAF sensor.. Which I am betting to be the issue. Longer smooth bore piping will allow the air to flow at higher velocity and the OEM MAF sensor has a very narrow range of "ok" limits


    Leezy wrote:
    09' tC's suck... LOL! Almost everyone I talk to at shows that has an 09' with an intake is throwing codes regardless of what brand of intake it is... I got a Tenzo R intake and I'll drive for 5K miles with no problems and then BOOM! CEL.. Then after a couple weeks it will go out. I've tried reseting the ecu, I've tried SRI and CAI. I've went through 3 or 4 different filters. It doesn't matter, it still pops on from time to time. I'm on my longest CEL free streak right now of about 8K miles! But I know, sooner or later, it's coming... lol


    In my opinion try the stock intake an see if the cel go away if it goes away then one of does two are correct. Hope it helps.
    • Edited 1 times, last by SuperWhiteTc06 on .
    Depends on the intake, most ebay intakes, whether cai or sri are going to throw a code. Your best bet is to go with a name brand and hope for the best. back in the day I had a fujita cai and it threw a code, and I didn't have any issues with it. Contrary to popular belief its not that big of a deal, its still going to keep the a/f ratio around stoic.
    thanks for your input guys, i appreciate it. I guess I'll just have someone put my stock one back in and eventually put in a TRD intake instead
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