Hello!

Like the title says getting persistent P0172s on my 06 Cooper S (Reduction pulley, exaust, and cool air box) along with the DSC light coming on if I push it hard. Was getting misfire codes with it too, noticed that the #3 terminal (or which ever is the normal one) on the coil pack was corroded so I did new cooler plugs, wires, and a screaming demon pack. No more misfires, still get P0172s after a few trips. Took one day pulled the codes and also had P0341 and P1498 along with the 0172. That's been about a week and haven't seen either since. Been seeing the 0172 for a couple months at least.

I did have to replace the chain tensioner last year so I'm wondering if it's an issue where the chain skipped a tooth but I don't recall if I had this problem then too or some time after the fix. Also I have replaced one of my MAP sensors a couple years ago after some codes so wondering that's an issue again since air issues could cause some of these too (though the P0341 is a bit weird).

Any clues? Any easy way to check if timing is off if that's what it might be?

Thanks so much in advance!

 

Here is what I think it could be IMO

P0172 code (System Too Rich Bank 1)-Check for vacuum leak/exhaust leaks. Could also be a dirty MAF sensor.
P0341 Camshaft Position Sensor "A" Circuit Range/Performance- Possibly a bad connection. You might need to change it.
P1498 Unmetered Air After Compressor- Check your intercooler boots/coupler.

 

Thanks for the reply! Yeah thinking step one is cleaning my MAF and and checking the intercooler connections and Cam Pos Sensor connector (since IIRC I had to unplug it to get at the tensioner, so maybe I did a bad job of getting it back on).