BenzWorld Junior Member
Date registered: May 2005
Vehicle: C230 Komp.
Location: Glendale, CA
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
CEL, running rich - help.
Ok yesterday I see a check engine. So this morning I plug in the reader and get back PO172, Running Rich bank 1.
The car is at about 49000, C230K 04, out of warranty. About 500 miles back I noticed the cam sensor connectors were slightly oily so I replaced the sensors and have the extended harness in place.
I didnt check the MAF sensor at the time. The only change recently is I went to Chevron while the tanker was refilling but I usually only got to Shell, dont think that matters though.
Can anyone provide some insight as to what I should check / replace, O2 sensor? plugs?
My first thought was crap I have the change the engine harness from the cam sensor oil seapage, but hopefully not (crossing fingers).