18 Sep How to find the obd2 port no power problem and fix them?
There may be many reasons for the obd2 port no power. The most obvious is that the car battery was disconnected or died (or battery terminals were not connected). Whatever the reason, the following are some temporary workarounds you can try without any other hardware tools.
How to find the obd2 port no power problem and fix them?
1. Check whether OBD2 Port has power on both sides.
2. Maybe it is several years old OBD2 Port which has lost its power supply, so it needs to be replaced with a new one. Or you can try the following workarounds.
3. Check whether other cars have problems too when using the obd2 port on your car. If other cars are OK, it’s probably your obd2 port which has the problem. However, if other cars also have problems with your car, it could be electrical problems or another issue.
4. Check whether there is any loose wire in the OBD2 Port connector. If yes, you should replace a new one as soon as possible because the loose wire can be a short circuit and cause a fire hazard.
5. Check whether the OBD2 Port has a fuse. If so, maybe it has been blown out by accident current overload or by another electrical fault. If the fuse is blown out, you have to replace a new one before using the obd2 port on your car again.
6. You can also check whether the obd2 port has a protective cover on it. Remove this cover to see if any wire may have been cut off accidentally on car wiring. If yes, you need to replace a new OBD2 Port as soon as possible because the loose wire can be a short circuit and cause a fire hazard.
7. If check-in step 6 doesn’t work, maybe a wire has been cut off accidentally on car wiring when you were trying to connect OBD2 Port or other wires to it. You have to find that wire and solder it back again carefully before using the obd2 port on your car again.
8. You can also download and install free diagnostic software such as OBD Fusion (for Android) or DashCommand (for iPhone). After you have installed those free diagnostic apps, now connect your phone to the obd2 port using a USB cable and let the new app run a test of OBD2 Port on your car. If it finds the problem, then the issue is probably caused by OBD2 Port itself.
9. Or you can also try something else, such as check whether there is power on OBD2 Port connector pins when controlling the ignition key to ‘ON’ or ‘START’ position. If there is no current on the connector pins, power is not supplied to OBD2 Port. So you need to find where the problem is coming from and fix it before using the obd2 port on your car again.
10. If all workarounds above didn’t work, there are probably electrical problems with your car wiring or other issues that need attention by a mechanic to be fixed before trying to use the obd2 port on your car.