seanieboy81

I have a 1999 C230 Kompressor. Yesterday I was driving and the Check Engine Light (CEL) came on. I took it to Auto Zone (AZ) today and borrowed one of their OBD II Scanners.

The scanner came up with error code P0446 (EVAP Emission Control System Vent Circuit Malf).

It said the following on the tool:

1st - Purge or Vent Solenoids defective

2nd - Possible blockage in vapor canister or EVAP line

3rd - Check connector and wiring

4th - Refer to AZ Commercial Preferred customer

I cleared out the code and it didn't come back on yet. Any idea what this error code means, and if I need to get something replaced.

Thanks!
Sean

seanieboy81

?

seanieboy81

The CEL just came on again today (thurs). I reset it last on Sun (also got gas on Sun after I reset it).

I'll have to see what the error code is this time. I'll let you all know what error code I get.

Any ideas?

BenzMan1

Sounds like MAS issues. The MAS is a fragile thing.

seanieboy81

I took the car to my local indy (MB-Class Autos). Oscar there said that I have some vacum leaks and that he has to replace some tubes (at 36k miles! OMG). I'll let you know as I know more. He said the code in the CEL this time was different.

C230Krarana

Hey did you ever find out what was wrong with the 446 error code? I my self is getting 447 code.

bicylindrico

My experience has been fault with the shut-off valve for the charcoal canister. This is not exactly something you can properly check without test equipment. The ME will check the fuel tank pressure sensor when the shut off valve is closed and look for a leak in the system. May be worth having the dealer look at the problem. Fairly common.