C180K Coupe 2003 - engine ligh problem

[gumis]

I have a problem with my car. Every few days yellow engine light comes on and then after few engine starts/stops it goes off. I have no idea what the problem is. I though that it was MAF but it wasn't. Its perfectly clean and engine works fine. It usually comes on when Im stuck in traffic.
I asked my friend to read codes stored in car memory:
- P2004 B2/5 HOT FILM MAF SENSOR
- P2029 MIXT. FORMAT SELF ADAPT (FUEL TRIM)

The first one points me to MAF, but I couldn't find anything about the second one. Does anyone know what might be the problem ?

Also I'm looking for good mercedes specialist in nort London, near Enfield - A10.

Thanks or help

 

[BlackC55]

Maf is your problem.

You have a diesel don't you.

I can tell from the fault you have posted. How geeky!

 

[gumis]

Black... no it's a petrol engine.

67k miles on the clock.

MAF it's clean. I did check it

 

[BlackC55]

Balls,

If it is clean it means nothing.

Replace it.

 

[gumis]

Would you know what the second code means ? I couldn't find anything about it and what can cause it.

Can I test MAF somehow ? Or that's the only way - replacing it ?

 

[BlackC55]

Replace it. its the only way.

The second code is a consequence of the first.

 

[gumis]

Could you help me with finding right part no. My VIN starts from WDB203746

btw.
can you have a look on my prev post...
http://forums.mercedesclub.org.uk/showthread.php?t=30434

do you think that it's related ?

 

[BlackC55]

Remind me in the AM. Off to bed. Night

 

[television]

When the MAF goes down other things try and compensate, change this first

Cheaper from GSF or Bosch, they have the parts number list

 

[gumis]

Television,

could you post address to bosh on-line shop please.

 

[gumis]

I have changed MAF sensor (£320) and it didn't help. I'm still getting this light on my instrumental cluster. Every now and then. It's not constatly on. After 4-5 engin starts it goes of and after next couple days (sometimes even a week) the light appears again.
My friend read fault codes for me couple days ago:

P200A
P201C
P2029

Any ideas?

 

[gumis]

Can anyone help me with this fault codes?

Thanks