I got the P0446 Engine code light. I verified the gas cap and got it again. I bought a new gas cap and cleared the light and 30 miles later the check engine light is on with the same code.

now the code is stored as a “permanent code” whatever that means.

any suggestions?

 

If you can get hold of ISTA+ run through the diagnostic and troubleshooting programmes on there. Could be a valve.

 

Did you end up finding a fix for this? If you did, what was the problem?

 

It was most likely the fuel vent valve, common on Gen III

 

Yes indeed

 

Seems to be! Mine went out at 25,000 km. Was off warranty…seemed to be one of the culprits for my bad gas mileage. I was in pickup truck category for a few months before the CEL lit up.

Smells like another class action suit I’ll get an email about in a couple years.

 

Thanks for the replies you guys. I'm at 44,000 miles and 2 months out of warranty. Looks like I'll be buying a vent valve. Just wanted to check in case it was something like the pressure sensor.

Edit: Just updating to say that I replaced the vent valve and so far the check engine has been gone for a couple hundred miles. Fortunately it is super easy to replace.

 

I recently got a CEL on my 2017 Clubman S. Even got a ‘Reduced Power, but it’s OK to drive it’ type warning once. The morning the CEL and reduced power came up, there was a wild clicking from the engine right after I started the engine. It went away before I could track it down. Sounded like around the serpentine belt area - I only learned later the tank vent valve was nearby. I’m guessing that was the sound of the vent valve clicking uncontrollably. 🤷🏼‍♂️

Codes:
• P0446. Evaporative Emission Vent System Control Circuit.
• 191C02. Fuel Tank Ventilation System, 2nd Inlet Point. Malfunction.
• 195014. Tank Vent Valve, Pressure Sensor Venturi Nozzle, Signal: Permanently Stuck.

I’ve had a vent valve on order for a couple weeks, I’ll report back after install. Part number 13907614013

Related info. https://static.nhtsa.gov/odi/tsbs/20...76363-9999.pdf

 

Yep, had this done this week on my 2017 F54. Shop told me about the TSB and the fact that BMW had updated this part due to this problem......

 

Hey $3 is 3$!!

 

Got a new valve installed. Sure enough, you can see the internal valve broken, as described in the service bulletin. I looked at the valve a few weeks ago and it looked fine. Turns out if you shake the valve lightly you can see it’s loose in there.

Old valve made March 2016 and the new valve in December 2020. Same part number.

Super easy swap if you want to DIY. The “hardest” part is unplugging the electrical connection on the valve without breaking it 😅

 

I just replaced the valve on my 2016 F54 S. I had the P0446 and 191C02 codes. Cleared codes and the light was back on within 5 miles. Put the new valve on and have about 50 miles on it since then, no lights yet.

 

Ditto. 2017 Clubman S All 4. Still in the shop.

 

Ugh, we have this on my wife's 2017 Clubman S All4. The TSB listed above doesn't call out F54 (but it does call out the B46/48). Bought the new fuel filler cap, but the light came back on, so it is probably this purge valve.

 

Replaced the purge valve, reset the light, no issues since.

 

Should I bother going through the dealer for this or its it not covered under warranty? My Car is a 2017 Clubman S All4 with an early 2017 build date.

Found this SIM from MINI and its is basically the same as the BMW notice.SIM 13 01 20 2020-05-11 TANK VENTILATION AND MIXTURE CONTROL FAULTS STORED
IN THE DME
https://static.nhtsa.gov/odi/tsbs/20...76383-9999.pdf

 

Car out of warranty, you are on your own with this one.....

 

Got the part at my 2nd closest BMW dealer for $140 (nearest dealer was $200???). Ordering online would have artbeen about $120 after shipping/tax.

Part was installed in about 5 minutes. Cleared the code and drove for about 15 miles and no new codes. Will keep an eye on it for a few days.

 

For those wishing to save a couple bux.

The Bosch branded is $36, shipping $5, same Bosch valve as the MINI and BMW branded boxes.

https://www.fcpeuro.com/products/min...ch-13907621174

$75 shipping included at ECS
https://www.ecstuning.com/b-bosch-pa...907621174~bos/

 

ur "a quick swap" still solved the problem a year later?

 

For me, yes.

 

our check engine light was critters seeking heat in the engine compartment, also then cut electrical wires to the fuel vent valve; and not cheap for the a full reading of the OBD-II Trouble Codes, and then wire repairs @ PAs top rated Mini Dealership.

 

Been there, had wires chewed on my R52 twice. They chewed up the heat insulation also.

 

Does MINI/BMW use soy or plant based wire insulation? I know Ford switched to soy based insulation some years ago and apparently small critters find it quite attractive and delicious. Had a couple of my friends with F-150's end up with trashed engine harnesses within a couple weeks of each other this summer. The local dealership noted this happens regularly with the later models, since Ford switched material.

 

Yep, they used this on some parts in the engine bay of the Gen 1 MINIs 2002+


Thanks
Mike