Hello All,

We've noticed a few odd things after purchasing our mini. It smokes (blue) only when idling for a while or if you rev the motor after it's been sitting running. Then the engine light came on after a week.

AutoZone's scanner retrieved the code P2188
"System too rich at idle bank 1"

They cleared the light and it came back a few days later. We checked it with the Carly OBD scanner which retrieved the following codes.

Engine / Motor:
- Fault: Mixture adaptation idle time per
- Code: 00278A
- Fault: engine shut-
- Code: 002FAC

Unfortunately I can't find anything regarding those codes or what they mean.

Does anyone know if the Carly codes translate to normal "P" style OBD2 codes or where I can look up what these mean ?

Two theories I have are :
1) There was a recall for this model specifically about the catalytic converter. Unfortunately it's past 100k miles no idea if it was ever done. Could this contribute to the too rich mixture ?

2) Is the MAF before or after the air filter ?
The mechanic replaced the air filter. I noticed the screw to close the lid was loose (hand tight) but didn't have tools. It makes a whistling noise (almost like a turbo spool) and is related to how much you are pressing the gas.
Possibly the air filter being loose is throwing off the fuel mixture ratio.

We just recently got this 2007 automatic mini. The car drives fantastic and had a lot of major 100k+ mileage maintenance done.
- Timing chain, guides, gears
- Spark plugs
- Valve cover gaskets
- All oil leaks etc.
- New Air Filter
- 142k miles on it.

 

my Bentley manual says:
Mini Fault Code P-code Definition
0x278A P1626 DME, internal fault, mass air flow sensor: Fault in driver circuit
0x2FAC P1515 Engine OFF Timer Plausibility

 

Does the Bentley Manual show the fault codes the same way the Carly app displays them ?

We do not have one but will soon. Would you be able to see if it shows these codes in there for us please ?

 

sorry, clicked the post button too soon. See edited post above. There is a mapping from the Mini Fault Codes to "P" codes.

 

Thanks squawSkiBum!
Sounds like this book is a must have

The two codes mentioned were only listed as faults

There was a third one listed in red that said
"00931B Outside temperature fault"
which if it's the outside temp, I would think it's irrelevant to the other codes but something in me has a odd suspicion it might mean the ambient air temp sensor in the MAF?
or maybe could be a part of the fault in driver circuit that the mass air flow sensor has ?

Would you be able to dig up the 00931B as well ?

I will research the new "P" style codes for the other 2 in the mean time and post my findings. Thanks again !

 

The book is a must-have. Very cheap accessory if you are going to do some of your own work.

Based on the conversation so far, I suggest:
1) Yes, tighten the screw. ANY fugitive air will give you a mixture fault, and the engine will try to compensate for the "new" air/fuel ratio.
2) Clean your MAF. You can buy MAF cleaner aerosol at your local auto parts store. Very simple to do, and a good place to start if you're having any MAF error codes.

 

Yes the Bentley manual is a must-have, it is expensive but will save its cost many times over.

The P-codes are the standardized OBD2 diagnostic codes. There are 25+ pages, over 1000 codes listed in the Bentley manual, sorted by P-code low to high and the mapping to Mini Fault Codes (which is what it appears you are getting from Carly) is random. So to look up the codes yesterday I had to scan through a lot of codes to find them.

Mini Fault Codes are of the form 0xN### where N is generally 2, 3, or 4 and # is 0-9 or A-F. (Engineers will recognize that as hexadecimal.) There are a few codes that start with 5 or C, in a quick scan I didn't see any that start with 9.

I use the Torque app with an OBD2-Bluetooth adapter to read codes, it provides the P-code so no painful scanning through the list. I suggest you try that. Also the suggestions above are a good place to start.