# Obd-ii **URL:** \ **Category:** Maintenance/Repairs\ **Created:** [February 2, 2012, 1:31pm UTC](https://community.cartalk.com/t/obd-ii/70748 "2012-02-02T13:31:04Z")\ **Posts on this page:** 13\ **Page:** 1
**Author:** ![Ifish2002](https://avatars.discourse-cdn.com/v4/letter/i/c5a1d2/32.png) [@Ifish2002](https://community.cartalk.com/u/Ifish2002)\ **Post date:** [February 2, 2012, 1:31pm UTC](https://community.cartalk.com/t/obd-ii/70748/1 "2012-02-02T13:31:04Z")
I posted a question a while back about my OBD-II for a 2004 Chevy silverado 1500 . Several code readers did not work , it turns out that the OBD was on the same fues as the cigarette lighter . Changed the fues that was blown and my OBD works , now I can take my truck in for emissions test . ---
**Author:** ![SteveF](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/stevef/32/2_2.png) [@SteveF](https://community.cartalk.com/u/SteveF)\ **Post date:** [February 2, 2012, 5:31pm UTC](https://community.cartalk.com/t/obd-ii/70748/2 "2012-02-02T17:31:34Z")
It seems odd that the the socket would be wired this way, but thanks for the tip. ---
**Author:** ![mleich](https://avatars.discourse-cdn.com/v4/letter/m/71c47a/32.png) [@mleich](https://community.cartalk.com/u/mleich)\ **Post date:** [February 2, 2012, 7:55pm UTC](https://community.cartalk.com/t/obd-ii/70748/3 "2012-02-02T19:55:31Z")
Nice. Saving money is good. ---
**Author:** ![the\_same\_mountainbike](https://avatars.discourse-cdn.com/v4/letter/t/c89c15/32.png) [@the\_same\_mountainbike](https://community.cartalk.com/u/the_same_mountainbike)\ **Post date:** [February 2, 2012, 9:30pm UTC](https://community.cartalk.com/t/obd-ii/70748/4 "2012-02-02T21:30:49Z")
Good knowledge. Nice work. Sincere thanks for passing the tip on. I’m certain it’ll get used somewhere along the line. ---
**Author:** ![Caddyman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/caddyman/32/23_2.png) [@Caddyman](https://community.cartalk.com/u/Caddyman)\ **Post date:** [February 2, 2012, 10:21pm UTC](https://community.cartalk.com/t/obd-ii/70748/5 "2012-02-02T22:21:42Z")
I wonder if the OBD-II system is disabled (no CEL) if the lighter fuse is pulled…Under certain circumstances, (used car lots) that could be very handy… ---
**Author:** ![the\_same\_mountainbike](https://avatars.discourse-cdn.com/v4/letter/t/c89c15/32.png) [@the\_same\_mountainbike](https://community.cartalk.com/u/the_same_mountainbike)\ **Post date:** [February 2, 2012, 10:29pm UTC](https://community.cartalk.com/t/obd-ii/70748/6 "2012-02-02T22:29:22Z")
Disabling the OBD systems on your used cars? Go straight to jail. Do not pass go. Do not collect $200. ---
**Author:** ![Caddyman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/caddyman/32/23_2.png) [@Caddyman](https://community.cartalk.com/u/Caddyman)\ **Post date:** [February 2, 2012, 10:32pm UTC](https://community.cartalk.com/t/obd-ii/70748/7 "2012-02-02T22:32:52Z")
Nobody is in jail… ---
**Author:** ![VDCdriver](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/vdcdriver/32/30_2.png) [@VDCdriver](https://community.cartalk.com/u/VDCdriver)\ **Post date:** [February 3, 2012, 1:23am UTC](https://community.cartalk.com/t/obd-ii/70748/8 "2012-02-03T01:23:23Z")
…yet ---
**Author:** ![Barkydog](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/barkydog/32/2470_2.png) [@Barkydog](https://community.cartalk.com/u/Barkydog)\ **Post date:** [February 3, 2012, 4:14am UTC](https://community.cartalk.com/t/obd-ii/70748/9 "2012-02-03T04:14:34Z")
It makes sense since some memory savers plug into that outlet. Nice piece of knowledge for future reference. ---
**Author:** ![BustedKnuckles](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/bustedknuckles/32/25_2.png) [@BustedKnuckles](https://community.cartalk.com/u/BustedKnuckles)\ **Post date:** [February 3, 2012, 6:35am UTC](https://community.cartalk.com/t/obd-ii/70748/10 "2012-02-03T06:35:45Z")
The ODB-II port is powered. My Ford Explorer also uses the cigarette lighter fuse to protect the ODB-II port. Many code readers use this power. But, removing the fuse does not turn off the ODB-II system. Just kills power to the port. The CEL and ECM still work as normal. Some other cars have a dedicated fuse for the ODB-II port. ---
**Author:** ![edb1961](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/edb1961/32/122_2.png) [@edb1961](https://community.cartalk.com/u/edb1961)\ **Post date:** [February 3, 2012, 6:06pm UTC](https://community.cartalk.com/t/obd-ii/70748/11 "2012-02-03T18:06:35Z")
I agree with BustedKnuckles, the OBD Datalink connector and the cigarette lighter are on the same fuse on my 2000 Blazer. The BCM and ECM are on a different fuse. Ed B. ---
**Author:** ![Locksmithy](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/locksmithy/32/2502_2.png) [@Locksmithy](https://community.cartalk.com/u/Locksmithy)\ **Post date:** [February 6, 2012, 1:58am UTC](https://community.cartalk.com/t/obd-ii/70748/12 "2012-02-06T01:58:23Z")
When we program keys to a FORD, we some times find out scan tool will not power up from the port. Our cable has an external 12V plug for use with a jump-box. This eliminates our having to trace down a fusible link or fuse or other power issue, particularly in the field. Everyone, make sure you have a pack of fuses, a couple each of the ones YOUR vehicle uses. Can save hassles on a weekend. Jeff ---
**Author:** ![jtsanders](https://avatars.discourse-cdn.com/v4/letter/j/c2a13f/32.png) [@jtsanders](https://community.cartalk.com/u/jtsanders)\ **Post date:** [February 6, 2012, 5:58am UTC](https://community.cartalk.com/t/obd-ii/70748/13 "2012-02-06T05:58:31Z")
“Everyone, make sure you have a pack of fuses, a couple each of the ones YOUR vehicle uses. Can save hassles on a weekend.” All my cars have spare fuses in the fuse boxes.