Obd2 has power but won t connect

Obd2 has power but won t connect. Fortunately I also have an ELM327 Bluetooth adapter and Torque Pro, that is able to communicate and pull codes from his golf. Oct 29, 2009 · 1997 - 2003 F150 - 2001 F150 OBD2 Port Problem - My OBD2 port doesn't work on my 2001 F150. 2007 lacrosse with the 3. But I can no longer moniter things by way of the OBD2. Jun 8, 2012 · The service manual says pin 16 is the power on the obd port,the schematic shows it is tied to the cig lighter port,the one on the right. Many people who have OBD 2 systems in their vehicles occasionally have trouble connecting to the system. If not then see if you can buy another cable (if it removeable) that has those pins. Following are the common reasons why OBD2 does not communicate with ECU-Blown power fuse in the fuse box. Watch as I have a tech 2 and a smaller Mac the obd2 port has power and ground but will not connect. It is hot all the time,where the other 2 power ports are only hot with key on. 200000. You can’t run No communication to obd2 porthave power to scanner. What is strange is my bluetooth obd2 reader connects just fine using the torque app on my phone. I can jump across the fuel pump relay to get it on it has 55# pressure. Feb 4, 2013 · That is odd. *** I have used Ancel AD410 and O'Reilly store's OBDII scanners, both were not communicated to ECU. TEST 1: Connect the positive DMM lead to DLC pin 4 and the negative DMM lead to the negative battery terminal, using jumper wires if necessary. 8L OBD2 is powered but will not connect to cpu all the time. But no spark or fuel when cranking through, good compression too. This terminal should be powered at ALL times. The Controller Anti-Lock Brakes (CAB) is not interfaced with the PCM through the CCD Data Bus to my knowledge. Even if your OBD2 port has power, it won’t communicate if the fuse is blown. Oct 29, 2022 · check the accessory fuse that powers the cigarette power port (usually the one closest to the driver), if the power port is not working then the fuse is burnt and that fuse also controls obd port communication. I have a dongle by Automatic that lives in my OBD-II connector. In most cases, it can be a cabling problem, or the OBD2 itself isn’t working. Have alresdy ordered a used pcm to connect ti the harness to see if it will communicateHave already ohmed out all the 4 wires to the obd2 port. I have had a similar issue when trying to connect my generic obd code reader to a friends mkiv golf, which is all stock, but does have a ccm problem (sunroof not working). 3L Vin T. I went to 2 local shops (not GM Dealers) who also could not connect. Finally, pair it with your iPhone through the Bluetooth or WiFi settings and launch the compatible app to begin diagnostics. I went to get an inspection sticker and the state inspector was unable to get communications through my obd port. When the bluetooth connector is plugged in and trying to connect, the "data" lights are flashing just like they do on the other vehicles i've tried it on. 3L Power Stroke Diesel - OBDII port not working- how to fix? - I plugged in my basic OBDII scanner but I'm getting nothing back (the scanner works on my car so it's not the scanner). Checked all fuses in the glovebox compartment already. So has anyone replaced or fixed this, or is this a stealership only fix Jun 18, 2023 · In this video,Obd2 Has Power But Won’t Connect. - Answered by a verified Buick Mechanic May 21, 2015 · When I got home I took an OBDII scanner, the same one I have used several times in the past to read the codes, and the machine did not connect at all to the car, simply the OBDII scanner does not power up. 3. An OBD2 connector, also known as an On-Board Diagnostics 2 connector, is a standardized port found in most modern vehicles. I have a check engine light on and when I try to read the code I get won't communicate with vehicle. Feb 11, 2021 · If, however, your scan tool won’t even power up when you hook it up, then check out this post, “OBD scanner won’t turn on” It covers the simple fix in detail. It’s a common issue that can have a variety of causes including a bad starter motor, a clogged fuel filter, a faulty alternator or a bad ignition switch, to name but a few. I could use a wiring diagram of the OBD2 port and any idea as to what could be wrong. Truck runs as always, like a champ. Feb 1, 2009 · Check to make sure your old scanner cable/connector that plugs into the OBD2 connector has pins 6 & 14. Thus, you’ll have to take it to a mechanic soon Mar 11, 2014 · Everything works. There was power to OBD port. It should be 5 volts but it is 0. Try a Pm to AWD V8, he knows a lot about that OBD 1-1/2 they used in 95. Watch as I show you Jan 26, 2021 · I’m having an issue where my car won’t start and in RUN position there is no power to 15A Transmission Position Switch fuse nor getting power to the 5A GEM Park Neutral Switch fuse on the fusebox. Why OBD2 Not Connected to ECU. Verify that there is power to relay 302 with the ignition in the run position. This is just recent that it hasn't worked. You have a 95 and depending on which computer you have (under the dash or under the hood) and which diagnostic link terminal you have there are only a few scanners that will work. If the scan tool does not receive data from an OBD II vehicle. Verified by both the obd connector, and voltmeter. Apr 28, 2011 · These are the connections that power the ODB2 scanner/reader that you connect. Check for voltage at pin 16 with the negative lead on a good ground point. There are different reasons why your OBD2 is not connected to ECU so you won’t be able to retrieve and reset DLCs. I ohmed the OBD2 port wires to the TIPM, OBD2 to ECM and TIPM to ECM. It basically logs my travel and can display basic codes. It’s like having a power outage and attempting to charge your phone. Apr 25, 2019 · 1987 - 1996 F150 & Larger F-Series Trucks - 97 F250HD OBD2 won't connect - Hi I have a 97 F250HD 4x4 with the 7. But in "car scanner" app it says vehicle is not responding in communication. But out of all the ones I tried with Torque pro this one worked great. Called Blue driver, they gave me a different sequence to connect the code reader. 5A OBD fuse is what supplies power to the OBD2 connector. 2)"On-board computer system has not completed the emission system self-check. 7 turbo diesel, 3. Mar 21, 2021 · Scan tool doesn't communicate? Can't read trouble codes? Try checking for pin fitment issues on the OBD2 connector with this quick and easy method. The OBD2 connector provides access to various data and trouble codes stored within the vehicle’s computer system. Aug 17, 2018 · About ten days ago, I was heading to work and my truck unexpectedly died with 9 miles to go. I think the problem lies within the TIPM and I plan to replace it as soon as I the race season is over. OBD II scanner I got from Walmart won’t connect, nor does the Bluetooth OBD II scanner that previously worked with the car. Next, plug the adapter into the vehicle’s OBD2 port. It directs power to close the PCM Power relay (302) which in turn provides power to fuse 22. Here's how to fix obd2 port not connecting with any automotive scanner. Oct 14, 2015 · 1999 - 2003 7. Many times, a scan tool won’t power up because the fuse has blown. I know it has that other type . All fuses are good. The port powers on the scanner but every time it says can't connect Jun 7, 2017 · Just to add to this, the 7. May 2, 2024 · To connect an OBD2 scanner to your iPhone, purchase a compatible Bluetooth or WiFi OBD2 adapter. Jan 29, 2021 · If your having trouble getting your scanner to connect, check out OBD won’t connect, and for code clearing issues, check out OBD won’t clear codes. Scanner powers on but cannot communicate. Which all work with my other car. My 2012 Ford Fusion will not communicate with . If you’re experiencing an issue where your OBD2 device has power but won’t connect, there are a few possible reasons and troubleshooting steps you can take. Scan tools scan every protocol but don't link. Fixed all that and on the road again. Add ons: Spyntec Free Spin Kit with Warn hubs (62672) Laramie Alloys, "Powerwagon" Flares, Powerwagon bed decal (4X4 off road) OE Ram mudflaps, OE Slush Mats, OE Clearance Lamps, Geno's shift knob in black, spray in bedliner, OE brake controller, Pro Tech Toolbox, Licensed "Extra" class HAM operator Jun 11, 2020 · The ignition switch receives power from fuse 116. When I plug my Autotap into the port, the LED comes on indicating power but the software doesn't connect. So I called my mechanic he came over with his Tech II computer. Sometimes it will connect. Blown OBD Socket Fuse. The connector will always have power on these two pins regardless of the key position, and when you plug a device into the port it will have power and may come on by itself (many scanners do this). A Tech2 will but you have to use the pre OBD2 cable if you have it. Here is a picture of the pins needed. May 30, 2017 · It is an Action Autoscanner Plus (CP9580A). May 24, 2024 · Power-cycle Bluetooth by turning it off and on again in your phone/tablet’s Settings > Bluetooth menu. On your phone/tablet, go to Device Settings > Bluetooth and select your OBDLink adapter. The cars that are manufactured after 1996 are mostly compatible with the OBD2 system. However, ever since that incident my OBD2 is not talking to anything I've hooked to it. Yes it has power. Checked all fuses and wiring. Located under the dashboard, the 16-pin connector enables technicians and vehicle owners to connect compatible diagnostic tools or scanners to identify issues, Apr 12, 2019 · I have power to the obd2 port but will not connect to scanner tried 2 different scanners. Jun 2, 2023 · When a car won’t start but you know that the battery has power and is not dead, it can be both frustrating and confusing. Oct 21, 2021 · Welcome to the Forum! Please provide Last-7 Characters of VIN & I'll provide ISTA ScreenPrints of wiring for the OBD II Socket. The closest thing to interfacing with the CCD Data Bus is the ABS light on the instrument cluster. May 20, 2023 · One of the most common causes of no communication is a blown OBD2 fuse. Like the PCM is mad at the port and won't talk lol. It is used to connect an OBD2 scanner or diagnostic tool to the vehicle’s onboard computer system. A blown fuse is often the cause of a scan tool that simply won’t power up. So do I have a bad ECU cause I am thinking so. ** In fuse box, no broke fuse fond. That would be against the law. Mar 13, 2013 · At one point a scanner was able to connect and clear a fault code, but now 3 different scanners are no longer able to make a link to the ECU. Power for the scan tool is supplied through this fuse. If fuse #22 is ok and pin #16 of the DLC has power, then check fuse #22. But I'm not Jan 3, 2012 · Major symptoms would be no power to either side of fuse 19 (intrument panel lights) no communication to obd2 port it has power but won’t communicate and I got underneath it with my multi meter to check for power to the pump and it gets battery power for less than a half second and cuts off to the dark gn/org asd wire 6. This RD/LG wire also provides power to the FICM. Or maybe your scanner just won’t clear the damn codes; if that’s you, then check out this post Sep 26, 2021 · If my OBD2 has power but won’t connect, what should I do? Most OBD2 won’t connect because it has no power. I do have a car starter and after market radio, but both have been professionally installed for about 3 years now. have 2 grounds at 4 and 5 and battery power at pin 16. The jeep has been running well. Note that pin 5 has "ground" in the description, but that is just for the communication signalling and not for power. still no connection. These include but aren’t limited to: Incompatible scan tool (Use a professional scanner) Blown fuse; Corrosive pin; Worn socket/pin Jan 20, 2013 · The OP had a 99. Ckeck for voltage at the fuse. If the fuse is blown, the scan tool won't get power and therefore won't communicate with the ECU. Tried several different scanners. If you have 12V+ at Socket #16 (upper socket on Inboard Column of sockets) then Scan Tool should light, BUT the Bus Communication wires between the OBD II Socket and JBE (on E9x models) need to be intact to allow communication between Scan Tool and JBE. I cant connect any scan tool to my port and ive tryed store bought scanners all the way up too 5000 dollar snap on scanners. This problem is really common for cars. First, the OBD 2 system may not be properly powered. I even tried all 17 available protocols but it seems the interface can't get any info from vehicle. now the smarty will power up, but refuses to connect to the truck, and i feel that the OBD is broke, however the pines are mostly screwed up to hell. Feb 5, 2010 · I replaced it and now the light stays on. Checked wiring and fuses even swapped PCM with a used one that was good. I have replaced the CIG fuse and verified there is power to pin 16 and good ground to pins 4 and 5. Jul 5, 2017 · I have a 2005 Chevy Colorado. May 9, 2024 · If your vehicle doesn’t turn on, then our scanners won’t be able to power on either. About 3 weeks now Oct 22, 2012 · First, the obd port has power. That being said I have not made much progress. Another option is to use an OBD to mini USB power adapter like this. There are a few reasons the OBD 2 won’t work despite power. How can I troubleshoot OBD2 scanner connection issues? Check all connections, ensure compatibility, and try restarting the vehicle and scanner. Here’s a list of issues the car is having: Gauges not working (Speed, RPM, Temp), gas is good; Milage won’t track; Lights on Dash (ABS, Power Steering, Airbag, Brake) A/C not Jun 26, 2019 · 08 3. The CAB has its own microprocessor that will store any DTC's and to access them a special scan tool or DRBIII is required. Don't let a simple issue prevent you from Jun 3, 2024 · Why won't my OBD2 scanner connect to the ECU? Common reasons include loose connections, compatibility issues, or a faulty ECU. Do not connect to body or chassis ground but to the battery terminal directly Apr 6, 2021 · If it doesn't work, verify that you have B+ (battery voltage) to pin #16 of the DLC (Data Link Connector - OBDII port). Nov 23, 2013 · But it won't talk to the ECU (whatever you want to call it. Had no power in car with charged battery. Battery is been changed by previous owner and its NON oem. The problem was the Climate Control. Port has not damage or loose wires and scanner pins are good. I have a cheaper OBD2 scanner that I tried as well, and got the same result. He was able to get power just no connection with ecu. This is inline with the transmission shop where they said they couldn't connect either to my truck. Have read that you 1) Overall Test Result "not ready". It powers on when connected, tries to communicate with it, but then eventually it says that it can't connect and to check the connection. The OBD port does have power as the blue light on my blue driver will illuminate when plugged in. Apr 13, 2021 · In this video, we'll decode the mystery of the OBD2 port and give you some troubleshooting tips to get your car's diagnostic system up and running. If the power source itself is out, then it won’t be able to power on anything else. Aug 1, 2022 · I tried plugging the OBD2 scanner in to see what the issue was. Thanks, Billy C in York, SC Jun 20, 2012 · 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. While doing a little searching I saw something about crank positioning sensors not allowing the OBD-II port to be read, but I'm not having any of the other symptoms. Sep 11, 2024 · If there is no communication between the OBD2 scanner and the vehicle’s OBD port, the most common problem is a blown fuse, no power to the port, wiring short, or a failed module that brings down the vehicle’s Controller Area Network (CAN bus). 3 powerstroke. You might just be able to use any OBD2 cable if it has the common connector that plugs into the scanner itself. Broken OBD power Oct 24, 2013 · I have a 2007 BMW 335i and i'm unable to connect with OBD II . Dec 1, 2009 · For 7th generation Civics, there is a fuse under the hood that protects the circuit for the data link connector (DLC). The will help you solve the scan tool won't connect problem. Feb 27, 2012 · To my knowledge, they have not/cannot lock out the scan tools. Used 2 different diagnostic tools, older Snap-on Verus and an Autel Elite, with no communication to either one. When I move the key to the ignition position the CEL light comes on as it should and goes off when the engine starts. To check if this is the issue, examine your vehicle’s fuse box and look for any blown fuses. When connected scanner has power. It’s possible that you received a faulty unit, but there are many other reasons people face OBD communication failure with ECU. I've got power at the obd but it won't communicate. Can a software update fix the OBD2 scanner connection problem? Are you experiencing issues with your OBD2 port not getting power? Don't worry, we've got you covered! In this video, we'll walk you through a simple troubleshooting process to diagnose and fix “Obd2 Has Power But Won’t Connect” is a common problem. Is this a cpu issue or a wire issue? If it was a wire then power would not be constant? Did look for this in issues but did not see it thanks for any help! Please remember it does have power so it's just a data flow problem. have . ) I have read so much about them I dont know which way is up. Sep 27, 2023 · I put the code reader on it, would not connect. Again, our diagnostic scan tools source its power from the vehicle itself. Nov 26, 2022 · I do not deny that the faulty OBD2 scan tool could not be a reason. However, if it has power but won’t connect, you may want to check its connection to your entire system. I have had a couple of rare instances where the car has hesitated a little when it's cold. Jan 31, 2018 · I have an 06 Silverado 1500 5. " 3) OBDII Monitors Not Ready * When key in position 2, all lights are on includes "check engine". But now the question Apr 6, 2011 · Fast forward to 2009 when i first got a programmer that uses the OBD. It is a Red wire with a Light Green stripe (RD/LG). Power to the OBD2 port seems fine as scanners will power up, and I've checked various (but not all) fuses in the 3 locations (under hood, passenger footwell, trunk). There is very low voltage to the "signal wire" pin 2. Look for a fuse that includes DLC its description. Dirty/rusty OBD2 port. It allows for the retrieval of diagnostic information and real-time data from the vehicle's onboard computer system. Some cars are made before 1996, and they show reluctance to connect with the OBD2 scanner as they do not have the system. It is the fuse on the power supply to the PCM (provides power with the key n the "run" position). OBD II data port has no power. In some cases, the OBD-II scanning tool is not compatible with the car or the vehicle. I'm already aware of fuse issues with the OBD connector so I pulled all ECM related fuses in both fuse boxes and checked them all with no change. but, nah, when the tranny went, the shop called me and told me, "hey dude, your car is throwing a cel, we ran a scan on it a couple of times and we cant get any codes". When the truck died, I had power to 12v Thjis is a custom engine installation into a jeep. Yes and relays. Since you have a 2001 Tundra, the communication protocol is ISO-9141 which uses just pin 7 "K line" for bidirectional communication with pin 5 as the signal GND (pin 15, the "L line" is not used or required and there is no copper connection present). Feb 26, 2022 · When connecting my OBD2 dongle to the obd2 port it gets power and my phone connect to the adapter perfectly. 3 volts. 32 volts at the class 2 data wire from pcm pin58 to the obd2 port pin 2. 7v to can bus 5v on the Jan 26, 2012 · 2010 Dodge 2500 SLT Crew Cab Long Bed 4WD G56 6SPD Cummins 6. Aug 8, 2013 · It receives power but will not link. However, to my understanding, most power banks with enough capacity for that purpose are not safe enough to leave in the car. If you have power there, then check the pins 4 and 5 for functioning ground. All seem fine. 8l. Try checking for pin fitment issues on the OBD2 connector with this quick and easy method. 42 LSD. Jan 10, 2007 · k first off, thanks for directing me to the stickies, i pulled a 7, bad tps. Apr 20, 2017 · Most dash cams don't have a large enough battery to record while the vehicle is off so most people recommend using an external power bank. I’ve been a mechanic for over twenty-five years, and plugging in the scanner to find it won’t power up is a very common fault. When my truck died, I had no CEL and my OBD-II dongle was no longer connecting to the ECU. The problem is it won't talk to the ECU. (07 Impala and 07 VW Jetta). It works perfectly on all the other vehicles I've tested it on. Note: You may have issues connecting if another OBD app is running, because the OBDLink adapter can only connect to one app at a time. ordering the part from ebay tonight. the obd port will always have power and ground regardless. Jun 15, 2023 · The OBD2 (On-Board Diagnostic 2) connector is a standard interface found in most modern vehicles. They both told me to have fun at the Dealership. If your OBD2 scanner not Jan 9, 2020 · Fixed 2004 Chevy Silverado 1500 no communication with modules but power to the obd2 port. Anyways I have a early 1999 F350 7. I checked the OBD2 port at a parts store and, sure enough, the scanner acts like it is connected to nothing. From Launch x431 to basic handheld. 2006 HHR. And it would not connect. oiemcv fjjs kyjkt ylspwn ngsozrt lpm qkatne hxj dkhg ljf