I got the car scanned today at Autozone. The code is P0100.

I looked at the information in the sticky. Referring to the MAF sensor... "Sensor Signal time = 0"

I'm confused, so what exactly does that mean? I've cleaned it twice now and it still pops up.

The weird thing is for example... I started it up today after cleaning it and resetting the codes. Drove 40 miles to work with no problems, no codes. Start it up after work and immediately the code pops up. This is how it as been... right at start-up.

So any ideas about what it's trying to tell me? To me it sounds kind of like a bad MAF, not a dirty one... but IDK. Sounds like the MAF is reporting that it's open (wire broken??)

EDIT: So here's a little more info. Sunday I cleaned an reoiled my K&N. I MAY have put too much oil on, but it wasn't much. So tonight I cleaned the MAF AGAIN, took the airbox out and cleaned it out really well and wiped it down. I got everything spotless that I could see. Put it all back together. Oh, cleaned the K&N filter again and put a VERY VERY LIGHT coating of oil on it. Cleared the codes, took it for a spin, seemed to be ok. Pulled up in the drive, shut it off for just a second. Restarted it and BAM... CEL again...
It also surges and acts funny under WOT and backfires while driving normally. (both occurring while changing gear)

I have no idea what to do now... I'm at 38,000 miles btw... so I can't just throw everything the dealers way without paying.

 

Sounds like you should just buy a new MAF and give that a try. Go back to stock paper filter.

 

P0100 MAF circuit insufficient activity. Most likely the MAF sensor has gone bad but it could also mean that the connection between the MAF and the wiring harness is loose.

 

Thanks guys... Yep, definitely going back to paper. MAF's are hard to find available but I can get one Monday. $114 I'm going to peek at the wiring but feeling doubtful about that.

 

Yep sounds llike a bad MAF. After u clear the codes it goes back into a closed loop and isnt running off the MAF for a while.. something like 30miles iirc.. But bam when it goes back into and open loop its running on the Maf again thus why ur CEL pops up later.. so yeah change ur MAF

 

Got a new MAF on today. Code still pops up. I'm not sure where to turn next without blowing an assload of money on it.

Not sure what to do now... I'm afraid it might turn out to be a boost leak somewhere like the intercooler. Although number one, when it does boost it holds full boost. Number two, there's no marks of any kind suggesting the intercooler sustained a hit.

This car is becoming a nightmare.

EDIT: btw I also put in a brand new Wix Paper air filter. So the K&N is not in there to contaminate the new MAF
Still researching... I guess I can check the wires at the plug. One guy with a Mercedes bought a replacement MAF. Didn't work... bought yet another and then it DID work but I don't have that kind of money to toss around. lol

 

Bump - For some reason my new post didn't bump it to the top. *strange*

 

why dont u go to the dealer and they will tell u.

 

A- I'm out of warranty
B- its going to my mechanic instead. He has over 30 years experience and does it for $55/hr

 

dont need warrenty just ask em what the cold means.

 

how are you out of warranty? this should fall under your powertrain warranty and last time I checked 38,000 was less than 100,000 so you should be good..

 

The computer is not seeing any activity from the MAF. Wiring harness may be rubbed through??? Check the harness for obvious areas of rubbing. The fact that you replaced and still have a problem means it is most likely wiring or the connector itself.

Also check the connector for corrosion.

 

Here's a short description of the powertrain warranty:
"Powertrain Coverage

This extended coverage protects you in the event of problems with major driveline components, including the engine, transmission, transfer case, and axles."

Now here's a full description from GM's website:

"Details:

General Motors will warrant powertrains on 2008 and newer: Chevrolet, Buick, Pontiac, GMC and Saturn passenger cars, light duty trucks or vans for fully backed, 5 years or 100,000 miles, whichever comes first**. This warranty will have no deductible, starting from the original in-service date of the vehicle, for warrantable repairs which are required as a result of defects due to material and/or workmanship to the Powertrain components as listed below:
Engine

Cylinder head, block, timing gears, timing chain, timing cover, oil pump/oil pump housing, OHC carriers, valve covers, oil pan, seals, gaskets, turbocharger, supercharger and all internal lubricated parts as well as manifolds, flywheel, water pump, harmonic balancer and engine mount. Timing belts are covered until the first scheduled maintenance interval.
Transmission/Transaxle/ Transfer Case

Case, all internal lubricated parts, torque converter, transfer case, transmission/transaxle mounts, seals, and gaskets.
Drive Systems

Final drive housing, all internal lubricated parts, axle shafts, constant velocity joints, axle housing, propeller shafts, universal joints, wheel bearings, locking hubs, front differential actuator, supports, seals and gaskets.
Courtesy Transportation Program

During the warranty coverage period, alternate transportation and/or reimbursement of certain transportation expenses will be available under the Courtesy Transportation Program if your vehicle requires warranty repairs. Several transportation options are available. Refer to your Owners Manual for details, including reservation of rights, or consult your dealer/retailer.
Roadside Assistance Program

General Motors is proud to offer the response, security, and convenience of the 24-hour Roadside Assistance Program for a period of 5 years or 100,000 miles/160,000 kms., whichever comes first. Refer to your Owner Manual for details, or consult your dealer/retailer. The Roadside Assistance contact information is listed in the Customer Assistance Offices section of the Warranty and Owner Assistance Information booklet.
What Is Not Covered

All the above items are not covered for damage due to accident, misuse, alteration, insufficient or improper maintenance, contaminated or poor quality fuel. Medium Duty trucks, including the C4500, are excluded from this powertrain coverage. For complete details refer to your Warranty and Owner Assistance Information booklet.

This is a supplement to the express conditions and warranties described in the Warranty and Owner Assistance Information booklet. Other coverages are not extended or altered due to this supplement."

No where in there does it mention anything about emissions, controls, sensors, electrical, etc. Only the major, lubricated, driveline components. I don't see how a MAF sensor falls into this warranty.

I could investigate this MAF issue further myself, sure, but I'm a busy guy with a full schedule already. There comes a point when my time is just more valuable than my money and I'd rather pay someone else to do it. It's just that simple.

Don't mean for this to come across like a personal attack or something it's just that I've heard this before on the forums. I just don't believe those things are covered under the PT warranty and I think some people might be surprised when they try to go get "free" service for them after 36K miles.

 

I heard some people get problems from k&n filters but other people dont get any so
all i can say is get a new MAF sensor

 

He already tried a new MAF sensor.

 

Ok, my car is fixed. I can pick it up tomorrow morning. (Saturday) I was at work already and gave them a call. It was nice because I got to speak to the actual guy that worked on it and he explained everything to me in detail.

It was the plug from the sensor. There was a broken wire to pin connection. What was happening is at start-up the ECM calls for a 3,000Hz test signal from the MAF. The MAF then responds with the requested 3,000Hz signal and within a very short period of time it's verified and MAF is considered operational.
He also said that there are TSB's from GM about the connector for codes P0101-P0108. I'm not 100% on that... as in it could be P0102 - P0106... but it's the range check codes for the MAF. There is NOT one for the P0100 code however. I'm very happy I took it to them. I trust them more, they explain things well and they are quick. I'll pay for that.. fine by me.

 

Hi I was reading this I think I may have the same issue. I have a '10 SS Turbo with a K and N Intake. Bought the car last summer had the P0100 code when I got the car on a stock intake. Changed MAF and MAP sensors. Cleared it still came back. I was wondering if anyone had a part number for the MAF sensor connector. I have had 2 different shops spend multiple hours on the car. They try to blame it on the intake. Car runs and drives great. Full boost. No tune.