P0102

[KIKER]

Posting this for a friend who has a 2012 3500 and has deleted and is running an H&S tuner and has this code showing. He's also running a cold air intake with an oiled air filter. I found a little info on the H&S forum and forwarded it to him. One cause is over oiling the filter and contaminating the sensor, which I had heard about that back when I was running a '99 Dodge Cummins. Any help would be appreciated.

 

[KIKER]

The code has something to do with the MAF sensor. Could that also cause his boost pressure to be low? He's running 3-5 lbs going down the highway at 75 mph.

 

[Simplysmn]

Code po102 mass air flow sensor circuit low input. meaning sensor has failed.

 

[KIKER]

After purchasing a new sensor, he found that was not the problem. It had a blown fuse. That was one of the solutions I found on the internet when he called asking for my help. He pulled the one that was mentioned on the H&S forum, but it wasn't blown. He checked the others, but didn't notice any. Today, he checked a little closer and found the culprit, replaced it, and is back in business. For now, anyway!