MAF Frequency Codes
Thread Starter
Teching In
Joined: Jul 2002
Posts: 21
Likes: 0
From: San Jose, CA
MAF Frequency Codes Just recently my SES light turned on. I Autotapped the car and got these two codes:
P0102: Mass Airflow (MAF) Sensor Circuit Low Frequency
P0103: Mass Airflow (MAF) Sensor Circuit High Frequency
<img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" />
What's the cause of these codes and how can I fix it? I have no screen on my MAF, but it's been like that for 6-7 months.
P0102: Mass Airflow (MAF) Sensor Circuit Low Frequency
P0103: Mass Airflow (MAF) Sensor Circuit High Frequency
<img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" />
What's the cause of these codes and how can I fix it? I have no screen on my MAF, but it's been like that for 6-7 months.
TECH Resident
Joined: Jan 2002
Posts: 754
Likes: 0
From: USA
Re: MAF Frequency Codes The MAF puts out a freq from zero to about 13,000 Hz, the more airflow, the higher the freq would be reported to PCM.
Being you are getting both high and low errors I'd first check for a blown fuse, then connector that plugs wires into MAF, bad pin in connector or a melted or broken wires.
Use a scanner and scan MAF in lbs/min, at udle it should be seeing about 3 lbs and at WOT about 30 lbs.
If you scan for raw freq, it would be about 2,000 Hz and about 10,000 Hz during WOT.
Being you are getting both high and low errors I'd first check for a blown fuse, then connector that plugs wires into MAF, bad pin in connector or a melted or broken wires.
Use a scanner and scan MAF in lbs/min, at udle it should be seeing about 3 lbs and at WOT about 30 lbs.
If you scan for raw freq, it would be about 2,000 Hz and about 10,000 Hz during WOT.
Re: MAF Frequency Codes I also recieved a Low Frequency MAF code, but not a high frequency one. I just put a new sensor in about a month or so ago, after i ruined the stock one by porting it. Will replacing the MAF sensor again most likely fix the problem for me, or is it something else?
