Hi, ive been searching through the posts and links etc.. for diagnostic codes for my 1989 Sedan Deville (4.5L) i check my codes and run the diag program, and ive gotten a few different codes, E30, E52 etc.. I found these with no problem, these are no big deal, just a couple glitches easily fixed, basically by resetting the codes. But the code i get the most is E59. Nowhere can i find the the Diagnostic example for the E59 code. Does anyone have the code book? ive seen them on eBay so i know theyre out there, i just cant seem to get my hands on one. Please help me out, I wish i knew what was going on. the car doesnt perform differently, only when the service engine light kicks on does it bog a little bit, barely even noticable, and i assume thats a normal thing. Does anyone know what E59 means? or have a link with that code on it for sure, dont send the links without the code, ive been there and done that. Thanks a lot guys, take it easy.

Hi, ive been searching through the posts and links etc.. for diagnostic codes for my 1989 Sedan Deville (4.5L) i check my codes and run the diag program, and ive gotten a few different codes, E30, E52 etc.. I found these with no problem, these are no big deal, just a couple glitches easily fixed, basically by resetting the codes. But the code i get the most is E59. Nowhere can i find the the Diagnostic example for the E59 code. Does anyone have the code book? ive seen them on eBay so i know theyre out there, i just cant seem to get my hands on one. Please help me out, I wish i knew what was going on. the car doesnt perform differently, only when the service engine light kicks on does it bog a little bit, barely even noticable, and i assume thats a normal thing. Does anyone know what E59 means? or have a link with that code on it for sure, dont send the links without the code, ive been there and done that. Thanks a lot guys, take it easy.

According to this site

http://autorepair.about.com/library/ts/obd-i/bl-dtcs-38.htm
(For an '88 - I don't know if '89 is the same, but it probably is)

E059 VCC Temp Sensor Circuit

Ok thanks a lot, that makes sense because when i hooked it up to a diag. machine it didnt pring up any problems, but the trani temp was in the negative degrees. Thanks for doing the research ckucia!