Is it safe to get power from OBD 2 port?

This terminal must be connected directly (i.e., unswitched) to the DC Positive of the vehicle’s battery. This connection does not preclude the use of a fuse or other circuit protection elements. This circuit may be grouped with other similar circuits. This terminal must be able to supply a minimum of 4.0 A.

What’s the power between pin 4 and 16 on an OBD II?

Pin 16 on the ODB-II connector is specified as “Battery Power” or “Battery Positive”. There will always be 12v power between pin 4 and 16.

Is the OBD II active when the key is not in lock?

As far as I know the OBD II voltage is active even when the key is in lock. Can anyone confirm this? edit : It’s for a product that will be powered from the OBD II connector. Pin 16 on the ODB-II connector is specified as “Battery Power” or “Battery Positive”. There will always be 12v power between pin 4 and 16.

Can a dash cam connect to the OBD port?

So yes, the OBD port’s power pin (battery positive 16): So except for the fact that you will/could drain the battery, connecting a dash cam to the ODB II port should not give any problems.

Why is the OBD II scanner not communicating?

Check the fuse box (Power Panel), it might be the reason why PCM isn’t able to receive power as well as communicate.

Pin 16 on the ODB-II connector is specified as “Battery Power” or “Battery Positive”. There will always be 12v power between pin 4 and 16.

Check the fuse box (Power Panel), it might be the reason why PCM isn’t able to receive power as well as communicate.

Is the OBDII port powered up when the car is off?

The OBDII port is always powered up, even when the car is off. The Scangauge II turns off parts of itself when it doesn’t detect impulses on the system for a number of seconds (I’m too lazy to look up the actual number). It actually is still partly on, but I doubt you would notice the extra current draw from the 12V battery.

https://www.youtube.com/watch?v=hhVrsdna6yo

So yes, the OBD port’s power pin (battery positive 16): So except for the fact that you will/could drain the battery, connecting a dash cam to the ODB II port should not give any problems.

Why is the OBD2 port not working on my Subaru Outback?

The shop tells me that when they plugged in their scanner to port and started up the car, the CEL started flashing again, and the OBD2 port didn’t have power to read what the problem was. I checked the OBD2 port at a parts store and, sure enough, the scanner acts like it is connected to nothing.

Can a battery be connected to an OBD terminal?

This terminal must be connected directly (i.e., unswitched) to the DC Positive of the vehicle’s battery. This connection does not preclude the use of a fuse or other circuit protection elements.

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.

This terminal must be connected directly (i.e., unswitched) to the DC Positive of the vehicle’s battery. This connection does not preclude the use of a fuse or other circuit protection elements.

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 reading on my OBD codes?

Check your fuses to see if any have gone bad. Remember that your car or truck might have more than one fuse box. This should be covered in your owner’s manual or a proper service manual. Another reason for getting no reading is that the scan port has become clogged with dust after years of not being used.

Is the OBDII fuse on my cigar lighter dead?

I went to plug my SCT programmer into my 2005 F350 OBDII port yesterday and it had a blank screen. My initial reaction was that the SCT was dead, but I decided to look up the fuse layout in the Owners Manual. I noticed that my primary cigar lighter is listed as “Cigar lighter/OBDII” in the Owners Manual.

Where can I get an OBD code scanned?

You can have your codes scanned free at most auto parts chain stores. 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.

How to disable OBD port by removing fuses?

(PM so not to make the info public) Go on eBay, buy an OBD extension cable, pop the port out and connect to the cable, wrap it and tuck it away, locate the other end else where in the vehicle. Is that easier/better than removing the fuses?

How many amps can I get from the OBD port?

No problem when you need to use the obd port just pull out the adapter and plug in the scanner. You will not be taxing the power of the OBD port, which is meant to supply up to 4 amps even the dual dashcams spec out at 2 amps or below.

Can a cigarette lighter be powered by an OBD port?

If your cigarette lighter is only powered when the engine is on you can use either of a couple of obd power supplies on Amazon and with a similar switch and they are very inexpensive. So I would not just kludge in a couple of wires to my obd port.

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