P0103 code

[madfiesta14]

I recently installed my 3" catless DP and loaded AP stage 3. I have put about 200 miles and then threw P0103 code,, Mass air flow voltage. Any ideas?

 

[Initial_Will]

Regardless if the voltage is high or low, you should check the sensor(s). Grab a volt meter and start poking around and refer to the owners manual or a repair manual for the approximate values of voltage/resistance. Make sure it isn't dirty as well and everything fits snug and there are no air leaks anywhere. That's the first place to start. It's best to have a good handheld so you can look at freeze frame data. Although not everyone has those since they are expensive, but they are awesome to have around in such a situation. I don't own a AP yet so I'm unaware of the info/detail they can give with diagnostic information.

 

[Initial_Will]

Sometimes these things can be small and simple as something not tight, dirty or up to a sensor malfunctioning and needs replacement.

 

[TyphoonFiST]

Is the sensor plugged in? Is it plugged in all the way?

 

[madfiesta14]

I will double check all connections and for cleanliness tonight, looks like an OEM MaF sensor runs about $120ish?

 

[dyn085]

There should be no reason to replace it unless you somehow broke it and all it does is measure air temp.

 

[madfiesta14]

There should be no reason to replace it unless you somehow broke it and all it does is measure air temp.

Gotcha

 

[StormGaits]

I recently installed my 3" catless DP and loaded AP stage 3. I have put about 200 miles and then threw P0103 code,, Mass air flow voltage. Any ideas?

Interested if you resolved your code issue as I'll be doing a downpipe/exhaust change as well. Thanks!