I was driving in to work today, and noticed my Service Engine Soon light came on. Hmm.... So I pull out the scanner to check the code, but it said "No Trouble Codes" found. When the light first came on, I also noticed the OD Off light was flashing.

I pulled the chip, just for kicks and I get the same result.

Any idea what the problem could be?

 

Can you scanner see all codes or just Powertrain codes....?

 

Chris, I've noticed some scan tools (like the Predator) don't see some codes. I have no idea why, but it's just my experiance. But if you have the O/D off light flashing, that means you have an electrical related transmission fault. Could be a bad sensor, or shift solenoid, or a wiring issue. Do you have long tubes? Often the trans harness melts to the pass side header. Hope this helps.

 

I am using a predator as the scanner, so that solves part of it. Maybe I will hook up the autotap to see what that says.

No long tubes here, the only thing I have ever done with the transmission was add a valve body, and that was a couple years back now.

I guess it's time to visit the dealer....

 

I got a predator and i also noticed that some times if the check engine light comes on. and i try to pull the codes, it says none found, then ill wait like an hour or somthing, and try to scan the codes again , and they come up....