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-   -   Error Code P0446 (http://www.peachparts.com/shopforum/showthread.php?t=292870)

sch 01-25-2011 10:22 PM

Error Code P0446
 
1998 Mercedes C230 - replaced water pump, timing belt...car sounded funny and didn't run right. All brake warning lights came on. Had brakes, rotors and brake sensor replaced. On drive home, car started "shuddering" and stalling. Codes had me replace mass air flow sensor and the adjoining parts. Now I am getting the code P0446. This car has 300,987 miles, does not burn oil AND I am a female who really wants to get another year out it...any suggestions would be greatly appreciated!

mbdoc 01-26-2011 08:08 AM

Code P0 446 is strickly about the charcoal canister shut-off valve.
That is a part that allows the fuel system to make sure that the gas cap is on.

Would not cause any type of running problem,

That car doesn't have a "timing belt". Does have a belt for the water pump.

deanyel 01-26-2011 10:16 AM

Googling the OBDII code name is usually educational. Sounds like you need to go to a shop to get the rest of the codes read.

mespe 01-26-2011 03:10 PM

Most likely a unconnected wire from when you R/R'd the water pump. that or hate to tell you, but not sure if the 98's wiring harnesses had isues or not. If they had issues, I would suspect the harness, as you just moved it all over the place.

deanyel 01-26-2011 06:22 PM

A 1998 model shouldn't have wiring harness issues.

Gil 01-09-2014 09:54 AM

Quote:

Originally Posted by sch (Post 2645739)
1998 Mercedes C230 - replaced water pump, timing belt...car sounded funny and didn't run right. All brake warning lights came on. Had brakes, rotors and brake sensor replaced. On drive home, car started "shuddering" and stalling. Codes had me replace mass air flow sensor and the adjoining parts. Now I am getting the code P0446. This car has 300,987 miles, does not burn oil AND I am a female who really wants to get another year out it...any suggestions would be greatly appreciated!

I got this in my ML350 and other forums and sources also suggest it has something to do with the charcoal canister. It does not always stay on.


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