What does code P0100 Mass or Volume Air Flow Circuit Malfunction mean? - LS1TECH

Log In 


LT1-LT4 Modifications 1993-97 Gen II Small Block V8

What does code P0100 Mass or Volume Air Flow Circuit Malfunction mean?

Reply
 
Thread Tools Search this Thread
Old 08-29-2007, 03:26 AM   #1
On The Tree
Thread Starter
 
ryanisfast's Avatar
 
Join Date: Mar 2007
Location: Tacoma, WA
Posts: 198
Default What does code P0100 Mass or Volume Air Flow Circuit Malfunction mean?

P0100 Mass or Volume Air Flow Circuit Malfunction

I have this code along with a p1657 which is the 1-4 skip shift, but I just installed headers and I'm surprised I'm not setting a code for the rear o2 sensors. One has cut wires and the other is dangling.

I also plugged up part of the egr, but it's not setting a code either. My car is 97 obd2 lt1. Any ideas??
ryanisfast is offline   Reply With Quote
Old 08-29-2007, 03:30 AM   #2
TECH Senior Member
iTrader: (3)
 
Formula350's Avatar
 
Join Date: Oct 2006
Location: Decatur, TN (N-W of Athens)
Posts: 7,568
Default

Just by reading it, I'd think the MAF is bad.
Formula350 is offline   Reply With Quote
Old 08-29-2007, 03:36 AM   #3
On The Tree
Thread Starter
 
ryanisfast's Avatar
 
Join Date: Mar 2007
Location: Tacoma, WA
Posts: 198
Default

Quote:
Originally Posted by Formula350
Just by reading it, I'd think the MAF is bad.
it says malfunction though... does that mean it's working now??
ryanisfast is offline   Reply With Quote
Old 08-29-2007, 06:39 AM   #4
Launching!
iTrader: (6)
 
97blackz28's Avatar
 
Join Date: Feb 2006
Location: Chicago Suburbs
Posts: 262
Default

no it means it is not working. how does your car run and idle? as far as the codes for o2 just give it a few cycles and you'll have your SES light, it is not always an instant thing.
97blackz28 is offline   Reply With Quote
Old 08-29-2007, 09:19 AM   #5
On The Tree
Thread Starter
 
ryanisfast's Avatar
 
Join Date: Mar 2007
Location: Tacoma, WA
Posts: 198
Default

is that the maf sensor? My car idles fine... My car does crack and pop a lot though when downshifting.
ryanisfast is offline   Reply With Quote
Old 08-29-2007, 10:22 PM   #6
TECH Addict
iTrader: (6)
 
ThoR294's Avatar
 
Join Date: Jul 2007
Location: Ringoes/Flemington, New Jersey
Posts: 2,801
Default

check the wiring and such around the MAF, make sure u didnt screw any of it up when u did the headers
ThoR294 is offline   Reply With Quote
Old 08-30-2007, 12:54 AM   #7
On The Tree
Thread Starter
 
ryanisfast's Avatar
 
Join Date: Mar 2007
Location: Tacoma, WA
Posts: 198
Default

oh I finally took it to the track... All I got was a 13.8@102. With headers and cai I thought I shoul dhvae been mid 13's around 105. I know I have quite a bit of hesitation up top when it gets warmed up, but it was like that before and I still managed a 13.9 stock. I also got a better 60ft of 2.1, but I thought I would have gained more than 2mph with headers and no exhaust besides the ypipe clamped to the headers
ryanisfast is offline   Reply With Quote
Old 03-15-2011, 09:21 PM   #8
Teching In
 
Join Date: Mar 2011
Posts: 3
Default

as for the mass air flow code. is there any chance you are running a k&n air filter the circuit malfunction means something is wrong electrically. I ask about the k&n filter because they are a oil based filter. If the filter is not properly oil correctly (normally to much oil) the excess oil tends to gather on the wire or the mass air flow. My suggestion to you it take apart the intake buy yourself a can of crc mass air flow cleaner give the sensor and throttle body a good cleaning. p1657 thats just because of the skip shift elminator. plug it back into trans it goes away thats the only way around that unless you reprogram the computer.
jcon104 is offline   Reply With Quote
Old 12-04-2011, 12:57 PM   #9
Registered User
 
Join Date: Jul 2011
Location: Tucson
Posts: 30
Default

I'm throwing the same code but my maf is brand new but when I unplugged it it ran fine. Idk what could be wrong with it
Haney789 is offline   Reply With Quote
Old 12-04-2011, 10:40 PM   #10
TECH Fanatic
iTrader: (2)
 
Join Date: Jan 2003
Location: jacksonville,FL
Posts: 1,122
Default

Clear it and see if it comes back.
MEAN LT1 is offline   Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
O2 sensors not reading... Green3spd LT1-LT4 Modifications 14 05-27-2014 09:54 AM
Check Engine Light Codes staringback05 General Maintenance & Repairs 70 07-21-2012 07:21 AM
95 mustang 5.3/60e swap trouble codes 99LS1Bird Conversions & Hybrids 1 06-17-2012 07:52 PM
Did you have this problem after LT install?? SSmokin99 Generation III External Engine 48 02-27-2010 12:28 PM
Auto Trans fault codes MTT700 Conversions & Hybrids 2 01-12-2010 11:22 PM


Tags
0100, 1997, 97, air, camaro, circuit, code, flow, maf, malfunction, mass, obd, p0100, regrind, volume, z28

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off



All times are GMT -5. The time now is 10:16 PM.