OBD meters not getting readings
#1
OBD meters not getting readings
HI, I have a 96 Dakota w/3.9 Magnum. Need to get inspection in NY and check engine light is on. Had same problem last yr. and changed out both O2 sensors drove 50mi. and passed. Soon after light came on again but I ignored it cause she runs great. Now I have reset the ecm and drive 20mi. light comes on. Tried to check whats wrong w/obd meter and I get no reading tried another meter same problem. Its like theres nothing going to the obd terminal.
#3
#4
Join Date: Dec 2003
Location: Sycamore, Illinois (displaced to Arkansas)
Posts: 4,119
Likes: 0
Received 5 Likes
on
4 Posts
Try pulling your codes using the "count the blinks" method. https://dodgeforum.com/forum/1st-gen...ml#post1472415
(codes 12 and 55 don't mean anything)
Your next step will be inspecting the OBDII connector on the truck itself (broken wires, poor connection due to worn out pins, etc) and the wiring going from the OBDII connector back to the computer. Those are your only options providing your OBDII scanner is known-to-be-good.
For wiring diagrams, go: https://dodgeforum.com/forum/1st-gen...71332-faq.html
(codes 12 and 55 don't mean anything)
Your next step will be inspecting the OBDII connector on the truck itself (broken wires, poor connection due to worn out pins, etc) and the wiring going from the OBDII connector back to the computer. Those are your only options providing your OBDII scanner is known-to-be-good.
For wiring diagrams, go: https://dodgeforum.com/forum/1st-gen...71332-faq.html
#7
Trending Topics
#8
Join Date: Dec 2003
Location: Sycamore, Illinois (displaced to Arkansas)
Posts: 4,119
Likes: 0
Received 5 Likes
on
4 Posts
Yes. Which is why I said to try using the "count the blink" method. That way, he can get an idea of why the CEL is on.
If he gets flashes, that means there is most likely something wrong with the wiring.
If he doesn't get flashes, either something is wrong with the wiring, or the computer is screwed up.
If he gets flashes, that means there is most likely something wrong with the wiring.
If he doesn't get flashes, either something is wrong with the wiring, or the computer is screwed up.
#9