[SomeGuyNamedX]

Hello all! I have a 2011 Cadillac CTS Coupe Premium with 180k miles on it. Maintenence has always been kept up on it, and my old MAF started to fail with intermittent "Service Traction Control" messages before throwing a CEL "P0100-00". Mind you, throughout all of this my car never misfired on a cold start. Ever. Even with the failing MAF.

I tried resetting it multiple ways by disconnecting the battery for 10 mins, and even starting the engine cold with it unplugged and letting it idle before plugging it back in and clearing the codes. When I started the engine cold with the MAF unplugged, it didn't misfire at all.

I went ahead and bought a Carquest MAF and installed it, cleared the codes from the ECU, and started the car cold. Misfired a couple of times (triggering a code but no CEL) before going back to normal. No more misfires for the entire drive and subsequent engine starts.

I'm thinking I may have a faulty MAF (even though it's brand new) and I don't want to damage the engine with it misfiring every cold start. Is there a proper reset process I'm forgetting?

 

[SomeGuyNamedX]

The MAF has nothing to do with TC. Unless there's a wheelspin mismatch associated with the MAF ?????

MAF is Mass Air Flow - intake charge fuel mixture control.

In my case, whenever I unplug the MAF it comes up with the service traction control message. It's weird. When my Bosch MAF failed, it came up with the "Service Traction Control" message, then a CEL afterwards. Got the new MAF, installed it, and the message went away (and the CEL after clearing everything).

I also ran the car cold without the MAF plugged in and no misfire, so it's a faulty MAF... Gonna replace it with another Bosch (which it had originally) and avoid carquest. I appreciate everyone's help/advice. I can upload pictures if you'd like?

 

[SomeGuyNamedX]

It does sound strange, but it IS true and also happened to me recently.

When the MAF is unplugged with the engine running you will see goofy codes that don't correlate to the MAF.
I neglected to plug in my MAF harness after some recent work on my Tahoe and received "Service Traction Control ", "Service Stabilitrak", and " Service ABS" as well as corresponding lights on the dash. Plugging in the MAF cleared them all instantly.

I concur with NorthernSRX. Check for codes and run Mode 6 tests.

Will do! Gotta purchase a Tourqe Pro dongle and will run mode 6 and give you guys an update. Gonna return my current scanner too.

I managed to get another Bosch installed, and am gonna do another cold start once the car cools down.

On another note: The car stored a permanent code for a faulty MAF sensor when I had the bad one in there.

 

[SomeGuyNamedX]

An Update: The Bosch MAF I put in stopped the misfiring on a cold start. Now, I need to change my sparkplugs as it idles a little rough (It's due for a change anyways as it was last changed at 100k miles). I really appreciate everyone's help! Thank you! I'm definitely avoiding carquest.