can anyone help me, im confused

[mr rosher]

codes keep coming back, wipe them clean and after 20 -30 miles there back ? this is on an 1993 e280 124 model,
so far changed all sorts ?

air mass,
lamda sensor,
o.v.p.relay,
top wiring harness,
purge valve,
throttle body,
spark plugs,

 

[kth286]

What are the codes that keep coming back ?????

 

[eric242340]

What are the codes that keep coming back ?????

Good question, what are the codes?