What is a OBD fuse?
Usually there is a fuse for the OBD port, if you cannot find they the fuse for the cigarette lighter and the auxiliary ports. The most common reason for getting no OBD code is simply a blown fuse. Even a fuse dedicated solely to the car’s computer diagnostics can blow for no apparent reason.
Is there a fuse for OBD port?
Locating the OBD fuse That’s because the OBD fuse is commonly shared with the cigarette lighter or 12 v socket or other consumers. The OBD fuse may be listed on the fuse cover as OBD II, DLC, Accessory port, 12 v power point or cigarette lighter and will most likely be located inside the vehicle.
Do you need a fuse for the OBDII port?
But, I believe that the “C4” version of SDS (the wifi version most shops have now) has its own power supply, so it can talk to the car’s systems over OBDII without that fuse. The older C3 version of SDS (with the RS232 breakout box), like most generic OBDII scanners, does require power from the OBDII port. One more update to this thread.
Is there no power at the OBDII port?
Even replaced it with a known good fuse, but still no power to the Cigar lighter or the OBDII port. I just did a quick test with my multi-meter and I do have power on one side of the blade fuse socket, but nothing at the OBDII port or at the lighter. Has anyone run across this before?
Why do I get No OBD code on my car?
Blown Fuse If you’ve plugged into your car’s diagnostic port and aren’t reading anything, you might think that your OBD-II brain has been fried, but don’t declare it dead yet. The most common reason for getting no OBD code is simply a blown fuse.
Why is the OBDII port on my Mercedes not working?
I received that cable yesterday and took the car to an Advanced Auto store this morning and they tried their basic scanner with this converter cable on the 38 pin socked and still had no communication or power, so I still can’t read my codes.