Finding fuse/relay

[renerodz]

Can someone tell me where is K40/7f30 (Fuse 30) on a '00 C280? This should be a fuse or a relay for both rear O2 sensor heater circuit. Cannot find it in any of the fuse/relay boxes, alldata don't provide for a location on this thing.

I continue to get P0141 or P0161 or both simultanously, then the CEL goes away. A few days later any of the 2 codes or both will come back, and go away again. I don't think both of my rear O2 sensors are bad, and I have no performance issues.

I've got the following from alldata, but can't find anywhere this fuse to start with:

Possible cause and remedy1 (for P0141)
1. K40/7f30 (Fuse 30)
2. Cable of O2 sensor heater of component G3/6 (Right O2 sensor, after TWC [KAT])
3. G3/6 (Right O2 sensor, after TWC [KAT])

Possible cause and remedy2 (for P0161)
1. K40/7f30 (Fuse 30)
2. Cable of O2 sensor heater of component G3/5 (Left O2 sensor, after TWC [KAT])
3. G3/5 (Left O2 sensor, after TWC [KAT])

Thanks for any help.

[manny]

Try this:
http://www.classic-roadster.de/cgi-bin/showitemlocation.cgi?TYPE=W202&X=2&Y=6&SORT=ITEM&START=K&ITEM=K35
That is the relay for the O2 sensor heaters. ;)

[SLAMMED_C]

Originally posted by renerodz
Can someone tell me where is K40/7f30 (Fuse 30) on a '00 C280?
The K40 is located in the right (passenger) side fuse box.

[renerodz]

Thanks very much for your help. I will work on it tomorrow Saturday and advise findings.

Rene