Installed Stillen Gen 3 CAI Saturday and everything seemed to be good to go. I went to visit family Sunday and on the way Home I'm hit with:

P0131 - Oxygen O2 Sensor Low Voltage (Bank1, Sensor2)
P0151 - Oxygen O2 Sensor Low Voltage (Bank2, Sensor1)
C1109 - BATTERY VOLTAGE (abnormal)

I've driven about 60 miles with the CAI and everything has been fine. Is this even something that can be related to the CAI install? Other posts and threads by other people who've had this problem never mentioned it happened after a mod. Has anybody else come across this? What was the fix?

I should note, the car is running 100% fine. Not rough, limp, or anything like that. Thanks in advance.

 

lol damn dude first u change a parking light bulb and u get error code. now u install a cai and get more codes? talk about bad luck i gotta ask tho how are ur mech skills?

 

Sensors are all plugged in properly and seated fully? If you disconnected battery during install, are the battery clamps on tight?

 

Reset it and see if it comes back hopefully you didn't contaminate the maf sensor if so clean them off

 

Seriously, I use to think I was pretty mechanically inclined but now I'm doubting myself. : /. When I had my Mazda, I did everything from the CAI to installing motor mounts so I have a little know how when it comes to turning a wrench. Even wired my own halos after cracking open the headlights.

Everything is plugged and buttoned up. I cranked the battery terminal a little tighter so we will see if that helped. I left the battery unplugged last night and switched the MAF sensors. Maybe I put them in reverse? I drove it 11 miles to my carpool this morning and no lights and smooth driving so fingers crossed.

Got the car and started modding so I could enjoy the process but thinking I'll pay someone to put things in for me from now on.

 

You might have not seated the maf sensors tight which could have caused a small leak making the o2 sensor see more air flow

 

How tight is tight? I'm hesitant to crank them any more but i'll see if there is any play.

What are the chances the O2 sensor is bad? I find it hard to believe but I'm a little lost as to what to do next after cleaning TB and MAF

 

It's not the sensors more than likely when you put the sensor into the intake housing it just didn't sit flush we all get excited the last 5 mins of an install and overlook small things btw if you lose the torx screws to the maf sensors you can buy a 10 pack from pep boys for 2 bucks

 

Also as much as it sucks read insctructions a few times and do installs sober or you'll be chasing your work

 

Lol I hear ya. I save the brews for the end of the project. I'm just baffled that something so simple is causing this many issues. Especially right after changing a bulb and getting a code - who does that?! I feel like you have to try to throw codes after a bulb change haha. I'll be checking everything tonight, Fingers crossed...again.

 

They require certain amount of resistance that's why most after market kits come with the resistors

 

Yea, I have the resistors and have them installed.

 

Use meter and check oem vs new

 

Well, the codes thrown from the bulb switch is gone. That was a matter of the MAFs being placed back in incorrectly. The new codes popped up about 60 miles after the CAI install.

 

Make sure all your silicone fittings on the intake pipe are tight