Jump to content

Intermittent P0101 code

hayners334

Recommended Posts

hayners334 Enthusiast

hayners334

Posted
Posted

2006 Sierra 1500 5.3. I'm getting an extremely intermittent P0101(MAF range/performance) code. First time it showed up was shortly after I got it(April), while towing a good sized load. Shut the truck off, and when started again, the light was gone. It has not showed up again, until today. This time, slammed on the brakes to avoid hitting a truck that decided to swerve back into the roadway suddenly, from the shoulder of the road. Probably not my best move, but after they got back over, I laid into the gas pretty hard, and the CEL came on at the same time. Put the scanner on it, and it's the P0101 code again. Freeze frame data shows MAF reading at .14 at the time the CEL came on. Not having much luck on finding a normal operating range for the MAF, so not sure where my reading falls on the scale. MAF sensor on its way out, or good cleaning needed? Any other possibilities?

Armo325 Enthusiast

Armo325

Posted
Posted

As mentioned above, I'd start with the MAF sensor.  After that, you might want to consider changing the intake gasket.

 

I had a similar problem on a 2005 Tahoe with the 4.8.  I didn't do a great job of troubleshooting and did the hard stuff first.  After changing the intake gasket and knock sensors (the gasket was a known issue; the knock sensors were just easy to get to with the intake manifold off), the problem turned out to be the MAF sensor.  I tried cleaning it first but still was popping codes.  I grabbed a new sensor (around $65 if I recall), changed it and never had the issue again.

hayners334 Enthusiast

hayners334

Posted
  • Author
Posted
11 hours ago, sefiroxx said:

Try cleaning it with maf spray. Also, check the pigtail/wire. Idle the truck and move the wire around to see if the cel is set

Thanks, wiring seems to be good, visually looks okay, and moving the wiring didn't make a difference, no CEL set by doing so, so I'm going to assume the wires are not the issue

hayners334 Enthusiast

hayners334

Posted
  • Author
Posted
5 hours ago, Armo325 said:

As mentioned above, I'd start with the MAF sensor.  After that, you might want to consider changing the intake gasket.

 

I had a similar problem on a 2005 Tahoe with the 4.8.  I didn't do a great job of troubleshooting and did the hard stuff first.  After changing the intake gasket and knock sensors (the gasket was a known issue; the knock sensors were just easy to get to with the intake manifold off), the problem turned out to be the MAF sensor.  I tried cleaning it first but still was popping codes.  I grabbed a new sensor (around $65 if I recall), changed it and never had the issue again.

Thanks, I checked the wiring and all seems to be good there, so will try cleaning and/or replacing it and see if that takes care of it. Problem is it's so intermittent, so cant try a fix and immediately see if it worked or not. Just my luck...lol

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Latest Articles

  • Posts

    • Brendan C
      2026 6.6 L5P oil cooler leaking oil at 4,000 miles

      By Brendan C · Posted

      New to diesel trucks. I happened to find my oil cooler leaking oil externally with only 4,000 miles on the truck. I didn’t realize this was an issue until I started researching it. Dealer is going to replace it under warranty but I’m wondering if there’s anything GM is working on to fix this issue. I’ve heard the oil filter used is the same as they use on their V6 motors and that’s what is causing the problems. Should I switch to a bigger filter or keep using the OEM recommended? 
    • Vu1can
      Seems to be Missing a lot of Updates

      By Vu1can · Posted

      So, GMCustomerService:  Judging by the Update History pictured above, is this truck missing any updates that it actually needs. If it's just for the infotainment system, the radio is working fine and no trouble with SeriusXM. and Android Auto is working fine wirelessly with my phone. Some months ago, an update notice was sent to my truck. I approved the update and it finished saying that the update was successful, but it seems that whatever that update was, it didn't actually get installed - at least not if I'm to go by the Update History shown above.   So, again, are there any updates that this truck really should have? I've checked with my dealer but they're reluctant or commit to anything and if I want them to check, they require a $200.00 fee just to check it out and then I'd have to pay for the actual update(s).    Ignorance is bliss, and if none of the updates goes to fixing any mechanical discrepancies, I'll just leave things as is.  
    • CNH-320
      Electrical Problem - solved

      By CNH-320 · Posted

      Hey everyone, I recently had an issue with my 07 2500HD GMT900. My DRL’s stay on at all times. Right front turn and right mirror turn signal indicator stay on solid at all times. By “at all times” I mean the only way to make them go off is disconnecting the battery. I tore the headlight assemblies out, tried disconnecting the harnesses to eliminate bad wiring at the harness, I unplugged the headlight switch, no change and the mirror turn signal still stayed on. My first thoughts were : Bad bulb and/or socket somewhere, under hood fuse panel bad, bcm bad, tail light or trailer wiring problem, or some random short to power in the harness.  Possibly a bad ground but unlikely. I had a big clue in the fuse panel, it had a burnt smell. I started pulling every fuse that had to do with DRL or right turn/park lamp. Nothing made the right directional turn off but pulling the DRL2 fuse made the DRL’s go out.  After studying wiring diagrams, I found that both problems had that fuse panel in common, the bcm also controls both problems but knowing the fuse panel had a burnt smell I removed and disassembled the fuse panel and found a little corrosion on the printed circuit board.  I ordered a new fuse panel from Amazon for like $260. When it arrived I installed it, and put everything back together, the problem was fixed. I figured the fuse panel needed to be replaced anyway so that was a logical place to start. Hopefully this story helps someone in the future. Regretfully I didn’t scan for codes before I did everything.
    • 2022LtTbZ71
      Service 4wd, ESC light, traction control light on, Service charging system (vehicle may stall)

      By 2022LtTbZ71 · Posted

      That stinks. I’m sitting on the side of the road right now with the same issue. Never had an issue before taking it in for the ground strap recall. Now I’m outside of warranty and they’ll probably want $200 just to diagnose what they already “fixed”. 
    • jagabom (Esquire)
      Passenger seat

      By jagabom (Esquire) · Posted

      I wonder kind of nuts and bolts they will come up with next? Jim

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...