P0101 code duramax

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This truck belongs to one of my really good fleet customers. I personally have not had to do anything to this particular truck for the past miles. Just been to the lube rack for oil changes, fuel filters, and rotates. Last week they brought the truck in for an oil change, rotate, and fuel filter. When my service writer went to pull the truck out of the stall he noticed the check engine light on. My shop is separate from the main shop.

P0101 code duramax

Log in. Sign up. JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. Tried to clear it but it came right back. Anybody experienced this? What's the fix? Where do I start? Sort by Oldest first Oldest first Newest first Most reactions. Is it over oiled? MAF sensor could just be bad. Needs replacing. Also this code can be related to the EGR valve. EGR valve may need cleaning or replacing.

Two star headed bolts hold it in and and elcrical plug? Anybody experienced this? Come join the discussion about duramax engines, performance, builds, modifications, classifieds, troubleshooting, maintenance, and more!

If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. It has a P, P and P Typically when the series of codes set it lets out a hugh cloud of black smoke.

Log in. Sign up. JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. Almost immediately the truck began throwing the P code and I would get reduced engine power after running above 70MPH on the freeway for about 15 miles. After adding those the code actually went away for a while but returned when I was towing about 2 weeks later. So driving around for a while in this crazy Texas weather we've been having recently I noticed a couple of things.

P0101 code duramax

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Replaced the air filter and sprayed the MAF and the code never returned. He responded saying he recalled a period last summer when it was extremely hot where multiple had the same message when towing. JavaScript is disabled. I've had a lot of problems with aftermarket filters AVS Forum. Once the MAF related stuff has been eliminated, have the dealer's GM diesel technician do a "position relearn" for both the turbo vane position and EGR position. If so, the MAF sensor might just be dirty. Insert Quotes Quotes Post Reply. Has a solution for the reduced power mode for this been found? On a side note, WTF is up with the reduced power mode for this code? A wise man once said "google it". Yeah I suggest finding out why it's in limp mode. Can't figure it out either mine is clean also Sent from my iPhone 4s.

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That sounds real good Andrew, I look forward to it! Your case studies look good. Top Contributors this Month View All. They will now remove the drains on the hoods on these engines from now on during service and make sure they are clean. Smokinlmm, in my opinion is dead on. So what happens is the air filters get water logged and suck them selves in. Replaced the air filter and sprayed the MAF and the code never returned. Let me give you guys a little heads up if you have no seen the new hood designs on the … GM trucks with the L5P the hood scoops are functional. They make some special spray cleaner for it. If anything with one of the valves is out of whack it can trip MAF codes. Ok, we will proceed when the truck comes back in. Not sure why some trucks run into it when others dont. My Photos. Basically a heat soak for the engine as the heat is trapped in the engine compartment with no air flow.