Code 8 and 12 in E420, 1994
#1
Newbie
Thread Starter
Join Date: Aug 2005
Location: Missouri Ozarks
Posts: 22
Likes: 0
Received 0 Likes
on
0 Posts
1994 E420
Code 8 and 12 in E420, 1994
Can anyone tell me the meaning of code 8 and 12 in the 1994 E420 with the 8 pin on board connector? I arrived at these codes by holding the button down for 3 seconds and then reading the code, held for another 3 seconds and read the second code. I cleared them by holding the button for 12 seconds and apparently there are no more codes stored. I think maybe the 8 is an 02 sensor and the 12 might be a coolant temp sensor? Does anyone know for sure?
Thanks,
Bill
Thanks,
Bill
#2
Member
Join Date: May 2007
Location: Little Rock, Arkansas
Posts: 202
Likes: 0
Received 0 Likes
on
0 Posts
1995 E 420
Can anyone tell me the meaning of code 8 and 12 in the 1994 E420 with the 8 pin on board connector? I arrived at these codes by holding the button down for 3 seconds and then reading the code, held for another 3 seconds and read the second code. I cleared them by holding the button for 12 seconds and apparently there are no more codes stored. I think maybe the 8 is an 02 sensor and the 12 might be a coolant temp sensor? Does anyone know for sure?
Thanks,
Bill
Thanks,
Bill
Acutally code 8 is Engine coolant temperature sensor, and code 12 is Heated oxygen sensor heater. Have a nice weekend!
![thumbs](https://mbworld.org/forums/images/smilies/thumbsup.gif)