Just bought a 1994 Honda, None V-Tec engine. just did a basic tune up, sparks, cables, rotor and cap. check engine light came on today after the tune up. I got the codes: Engine code is 17 (Speed sensor) which i already knew but i also got the D4 flasing codes. I got codes 12 and 4 which i have looked up in different posts and 12 = (EGR) and 4=(CKP) but i dont know it these codes are different from engine codes? i need to know if these codes are correct transmission codes. i need help please. thanks.

p.s. The car also idled high (2000 rpm) and when i lowered the idle it felt like it wanted to cut-off.

 

Yes, transmission codes are different than engine code. It sounds like it most likely is the Vehicle Speed Sensor (VSS) or the VSS harness connection.

See this link:

http://techauto.awardspace.com/vss.html

 

yeah you are correct tht the engine code i got (17) is the speed sensor but what about the transmission codes (4) and (12)?? i checked them as engine codes and thats when i got the egr valve and ckp, but since you said they are different then i dont know what they mean?

 

In the link I post, the transmission codes are also linked. D4 with code 4 is the VSS also. Code 12 has nothing listed; but, probably is a related to the VSS. The link starts with 17,4 as part of the title.

 

you were correct. thank you so much. God Bless.