: Help with Check engine light and pcm codes!!



CaddieDeville
09-15-06, 05:28 PM
Well recently my "check engine soon" light came on so I decided to pull the codes. I came up with a few, they are as follows:
History PCM P0603
History PCM P0741
History PCM P1520

I would like to know what the codes mean and how I can resolve them. And If theirs something I am missing please inform me of them. I have a 99' Deville with 70,000 miles thnx!

dkozloski
09-15-06, 05:34 PM
Well recently my "check engine soon" light came on so I decided to pull the codes. I came up with a few, they are as follows:
History PCM P0603
History PCM P0741
History PCM P1520

I would like to know what the codes mean and how I can resolve them. And If theirs something I am missing please inform me of them. I have a 99' Deville with 70,000 miles thnx!

http://www.obdii.com/codes.asp

Look'em up.

CaddieDeville
09-15-06, 06:07 PM
Well I've figured out what the codes were nothing to worry about except for P1520- Transmission Range Switch Circuit, Can anyone explain what this means and how I can fix it?>??

Ranger
09-15-06, 06:26 PM
I am not sure what that one is, but since it is historical, clear it and see if it returns.

eldorado1
09-15-06, 09:42 PM
The transmission range switch is the little black box sitting on your tranny shift arm. I don't think it's a problem not having one operating properly, because inside the transmission is another set of switches as a backup. However, if those fail you'll start to drop out of gears, which isn't fun