High Input to maf sensor. How do i fix this problem.

 

Got a scan tool to monitor what the MAF is doing?

 

do a few visual checks. the sensor voltage is high, that means that the MAF is seeing higher than normal air flow. check your air intake ducting for loose clamps or anywhere it could be sucking in air after the air box or CAI befor the MAF. check to make sure its pluged in, and look at the connection for crud. Hot wire MAF sensors have a tendancy to collect crap on the sensor wire, get some electrical component spray cleaner and gently clean off the sensor wires. check the sensor connector for proper voltage. if you have done all these checks and it is still not working, its probably a bad MAF.

 

P0103 = MAF circuit high frequency.

The MAF puts out a frequency signal, not voltage. The P0103 code sets when the frequency exceeds 10,700Hz. That frequency corresponds to a mass air flow of 407 grams/sec (stock PCM calibration table). That flow would correspond to something like a 383ci engine, turning 7,000rpm and exceeding 95% VE. The PCM knows the signal is incorrect (or there's a few mods you haven't put in your signature ), and is telling you. As Rob/Shoebox points out, put a scanner on it, and see what the MAF readings are under various engine operating conditions. Or, if you have access to a multi-meter with a frequency counter, hook that up to the yellow signal and black/white ground wire in the harness, and see what the output signal looks like.

 

sorry about that, FREQUENCY, not voltage.