The check engine light just came on my wife's 1994 E320 wagon, so I followed the procedure to read the codes, and 2, 5, and 6 came up. The car has 150,000 KM's and is running and idling fine.

Error code 5, EGR is well documented and I will follow the directions to test and clean.

I cannot seem to find codes 2 and 6 mentioned in the archives. Would someone please id them for me?

Thanks,

John Wells