[Kbrogger]

Sorry guys, did a quick search and didn't come up with anything. I'm on a road trip in Florida from Minnesota in my friends 06' Cummins, and the check engine light just came on. Tried the key thing, and it doesn't bring any codes up. Do newer models not do this?

 

[michiganracer2]

key from off position to acc, off and back acc, 3 times. do not start, and do it quickly. If dont work I dunno.

 

[steelhead01]

pull into any national chain auto parts store
most have a code reader

 

[Kbrogger]

Turns out I just wasn't doing it fast enough. Came up with a code for a short, or loose connection at the battery. The check engine light went away on its own in short order.:confused013: