psychobooe

I threw P0102 and P0113 CEL after installing my Helix uppipe. I was wondering if these should concern me. P0102 is a low MAF input and P0113 is a high intake air temperature. I haven't reinstalled my heat shield yet, so that might have something to do with it. Just wanted some input.
Thanks for the help.

psycho

Mulder

Check to make sure your MAF sensor is plugged in and the wires aren't damaged. The intake temp sensor is integrated into the MAF so those codes together indicate that it may be disconnected.

qwk_wrx

iTrader: (4)

You could also try getting a CEL restrictor for the up-pipe....

I threw a PO420 code and ot pooped up some other bogus codes

Mulder

The CEL usually associated with an aftermarket uppipe is P0546, which results from a removed or damaged EGT probe. The codes listed above are not directly related to the uppipe but probably were caused by the MAF being disconnected or disturbed during the installation.

psychobooe

Well, I threw P0546 also, but that didn't surprise me. I just want to know what could cause the other CELs. Should I be concerned? Can I clean the sensor perhaps? How much does a new one cost?
Thanks.

psycho

Mulder

I don't think it's a matter of cleaning the sensor since you are getting codes for both the MAF and intake temp circuits. It's more likely an electrical problem. You can remove and inspect the MAF easily so by all means do so, then reinstall and plug it back in and see if the codes come back. If they do and there is nothing visually wrong with the sensor take a very close look at the wiring, follow the harness back and look for damage. Retrace your steps from the uppipe install to figure out what might have happened.
A new MAF is around $200 so you don't want to buy one unless it's really bad.