I just replaced my front end and new Hancook tires last week. I go to get my truck inspected thinking it would pass with flying colors. They handed me my keys and said it failed. I asked why and they told me that they couldn't get a emmissions reading. It was all un available. I've had no check engine lights come on, haven't changed or disconnected my batt. They told me to drive it a few hundred miles and come back.

Any thought out there?? I just sank over 1k into this truck now this???

I did find a 30amp fuse on the floor of the drivers side. Could a missing fuse be the culprit??

Any thoughts would greatly be appreciated.

 

Sounds like a P1000 dtc. I'd check to see if a fuse is blown for the obd2 port which I think is a radio fuse, not really sure on an 03. Someone else can verify that.

 

Yeah, go to autozone and borrow a scan tool and see if anything comes up. If not check the fuses.

 

Radio works, everything works as far as I know. Do I pull every fuse and check them?

 

I would study the manual before I started randomly pulling fuses.

 

not sure about Mass, but in Texas you can run a car emissions test two step idle, or dyno test if the OBD2 port is non responsive

 

I think the OBD fuse is the cig lighter, but not sure.

 

ok, I found that Cigar Lighter/Data Link Connector fuse was blown. Could this be the problem? If so do I need to drive around for a while after replacing it for the truck to recycle?

Thanks!

 

That will cause a "no read" failure since they cannot connect to the PCM with a dead OBDII port. It doesn't have any bearing on the PCM's ability to run its internal diagnostics and to keep track of the state of the tests.

You can either take it back in for a retest (assuming the fuse didn't blow again) or you can take it by the auto parts store for a read. You're interested in the readiness monitors, not fault codes.

Some jurisdictions allow up to one or two incomplete monitors and will still pass the vehicle. Check YOUR requirements before you go and you will know where your truck stands. FWIW, the EVAP monitor is usually the hardest to get to run and it won't run in cold weather under 50F.

 

If you go to the parts store to have it read DO NOT LET THEM ERASE ANYTHING, that will give you a P1000 and will not pass. That's the same as disconnecting the battery, then you have to go through all the drive cycle stuff (a real PITA ).

Glad you found it.

 

Ah, cigarette lighter fuse, not radio fuse. I should have typed that in my first response and saved you some time. :o

 

It was the cig fuse. It was blown, replaced it and passed inspection.


Thanks a million for the help.

Great Forum