2003 f150 heritage. Not giving obdII
01-04-2015, 06:08 PM
#1
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2003 f150 heritage. Not giving obdII
So, I have a 2003 F150 Heritage edition with 240,000+ miles on it. It's been a great truck. I rebuilt the 5.4L engine about 45,000 miles ago and put on a cold air intake. I live in Utah and the snow here is crazy.
today, there was no snow, but I got on the freeway for about 15 minutes today and was driving an average of 85 miles an hour. When I got off the freeway and pulled up to my destination I noticed that my check engine light was on. It wasn't on before the freeway. My biggest issue here is that my OBDII will not give a code. The OBDII reader doesn't even act like the truck is turned on. (It is on) my truck runs fine, acts fine, drives fine, nothing seems to be wrong with the truck. So is probably an o2 sensor from all the snow and slush that have gotten on my air filter.
I checked the fuse for the OBDII plug thing. That's all I can think to check. Any theories?
today, there was no snow, but I got on the freeway for about 15 minutes today and was driving an average of 85 miles an hour. When I got off the freeway and pulled up to my destination I noticed that my check engine light was on. It wasn't on before the freeway. My biggest issue here is that my OBDII will not give a code. The OBDII reader doesn't even act like the truck is turned on. (It is on) my truck runs fine, acts fine, drives fine, nothing seems to be wrong with the truck. So is probably an o2 sensor from all the snow and slush that have gotten on my air filter.
I checked the fuse for the OBDII plug thing. That's all I can think to check. Any theories?
01-07-2015, 10:13 AM
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still having this issue
So, I have a 2003 F150 Heritage edition with 240,000+ miles on it. It's been a great truck. I rebuilt the 5.4L engine about 45,000 miles ago and put on a cold air intake. I live in Utah and the snow here is crazy.
today, there was no sno
w, but I got on the freeway for about 15 minutes today and was driving an average of 85 miles an hour. When I got off the freeway and pulled up to my destination I noticed that my check engine light was on. It wasn't on before the freeway. My biggest issue here is that my OBDII will not give a code. The OBDII reader doesn't even act like the truck is turned on. (It is on) my truck runs fine, acts fine, drives fine, nothing seems to be wrong with the truck. So is probably an o2 sensor from all the snow and slush that have gotten on my air filter.
I checked the fuse for the OBDII plug thing. That's all I can think to check. Any theories?
today, there was no sno
w, but I got on the freeway for about 15 minutes today and was driving an average of 85 miles an hour. When I got off the freeway and pulled up to my destination I noticed that my check engine light was on. It wasn't on before the freeway. My biggest issue here is that my OBDII will not give a code. The OBDII reader doesn't even act like the truck is turned on. (It is on) my truck runs fine, acts fine, drives fine, nothing seems to be wrong with the truck. So is probably an o2 sensor from all the snow and slush that have gotten on my air filter.
I checked the fuse for the OBDII plug thing. That's all I can think to check. Any theories?
I'm still having this issue. Could someone point me in the right direction
01-08-2015, 10:35 PM
#3
Senior Member
I would follow the wiring. See if you can find something disconnected.
Also, try posting in the 97-03 section. More people with specific knowledge of your truck may see your post and can help more.
Also, try posting in the 97-03 section. More people with specific knowledge of your truck may see your post and can help more.
01-09-2015, 06:16 AM
#4
Mark
iTrader: (1)
Look at the cig lighter fuse....