Why is my OBD2 scanner not communicating with my car?

Each time I have tried scanning my vehicle for codes using the OBDII scanner, there is a message on the scanner stating that it is unable to communicate with vehicle. There are lots of issues with my car, but I am not able to correct them because of the OBDII issues.

Why is my scan port not working on my car?

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.

Do you need a scanner for GM OBD codes?

In which case a scanner is required. NOTE: Some 94 & 95 models that DO have the A & B terminals still require a scanner. All vehicles after 96 are OBDII,and require a scanner to access them. Diagnostic trouble codes may be cleared by disconnecting the battery ground cable for at least 20 seconds.

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 there an OBDII code for my car?

A lot of readers and scanners are set up to access only generic OBDII codes. Most vehicle manufactures also have their OEM codes that some Readers and Scanners can’t seem to read for lack of conversion ability.

Why does my OBDII port have no power?

Communication line does not provide the power. The power is pulled from the pos and neg ports on the obd ii. There is something wrong with your communication wire Communication line does not provide the power. The power is pulled from the pos and neg ports on the obd ii. There is something wrong with your communication wire Click to expand…

How to read GM OBD diagnostic codes for free?

How to read the codes 1 Ground terminals A and B (see diagram below) with the ignition “ON” and engine not running. The system will enter the… 2 After Code 12 is displayed, any stored trouble codes will be displayed by flashing the “CHECK ENGINE”, “SERVICE… More …

When do I get ” linking error ” OBDII Comm failure?

Dec 24, 2008 I have been having so much trouble with this car so I finally went out and bought a nice OBD II Scanner. Relief came when the scanner arrived but it did not last long. I booted it up correct and as it tried to connected I get “Linking Error”.

What are the symptoms of a bad crankshaft position sensor?

There are a number of common symptoms of a bad crankshaft position sensor that you can look out for to help you in determining whether or not your sensor has failed including engine misfires, rough idling, stalling, or hard starting just to name a few.

Is there a fuse ID for OBD2 scanner?

Here is a wiring diagram which pertains to most cars showing the power going to the ALDL connector. (below) If anyone reading this needs the wiring and the fuse ID to there car please send there request here. Also, check to see if the scanner works on a different car. We are here to help and tell a friend. helpful? No.

What to do if your HO2 sensor is damaged?

Repair any damaged wiring from contact with exhaust. If HO2 Sensor itself appears to have been damaged, replace it. If a visual inspection reveals no obvious problems, viewing the faulty heater circuit on a scan tool may reveal if the fault is currently occurring.

What do you need to know about Blazer products?

The Blazer Products retail line of torches takes the same industrial grade tools trusted for over 29 years and offers them in new home friendly versions suitable for both the Professional and the Home User. Featuring the same unsurpassed quality you’ve come to expect from Blazer as well as a new and innovative child resistant mechanism…

Can a torque Pro plug in Elm 327 OBD2 scanner?

So I bought a Torque Pro plug in ELM 327 OBD2 scanner for my phone, but when I plug it in there is no communication. So I went to FLAP and they plugged in their scanner, and it says no communication, just like mine. So I looked at the plug in under the dash, and only four the many holes actually have contacts.

Why is my scanner not connecting to my cel?

(Additional user comment) If scanner cannot connect and CEL does not come on, the problem is most likely the ignition switch. helpful? I have checked all the fuses and they are all in good working order.

Why is my Dodge Ram not running properly?

Particularly in the 2000 Dodge Ram for some reason. Not sure why. I suspect your alternator or your battery or both are failing. Since your car needs both fuel and spark to keep the engine running it is possible that, unless you’re revving up, the fuel pump and all the other electrical components are not getting enough juice to make the grade.

Why does my Dodge Ram 1500 not idle?

I concur with Fclester, I experienced the exact same symptoms with my 2001 Dodge Ram 1500 w/5.2l V8… it ran great then I killed the battery. After charging it back up, the truck would not idle. I consulted the Oracle of Google and after much research, I did the same as Jack B Nimble and poof, truck works perfectly again.

What to do if the OBD II scanner doesn’t communicate with the vehicle?

What to do if the OBD II scanner doesn’t communicate with the vehicle. 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. Do not connect to the body or chassis ground but to the battery terminal directly.

Is there a cel code for a Dodge truck?

64stacey has another post that has a lot more info. The truck is a 96 and you can get the codes by doing the key dance. I posted that and haven’t heard back. Plus the cel wasn’t on (no codes to read). Not open for further replies.

Why does my Dodge truck have no gauges?

Fortunately when I finally broke down out of utter frustration and took it to the dealer to have it repaired the first time it didn’t cost me an arm. $108 later the service guy said it was a loose wire connection in the PDC.

How to connect an OBD-I scan tool to a vehicle?

Some OBD-I vehicle communication adapters require 12 volts or ground be provided from the vehicle in order to establish proper communication between the vehicle and the scan tool. This is achieved by plugging the Lighter Power Cable and/or the Battery Power Cable into the silver power port on the side of the OBD-I adapter.

Can a vehicle connect to an OBD-I communication adapter?

How to connect to OBD-I vehicles with an OBD-I adapter and DC power adapter. Some OBD-I vehicle communication adapters require 12 volts or ground be provided from the vehicle in order to establish proper communication between the vehicle and the scan tool.

Where are the fuses for the OBD2 scanner?

If not please check the system fuses 17, and 15. Also check the ALDL for corrosion and clean up the terminals as needed. Here is a wiring diagram which pertains to most cars showing the power going to the ALDL connector. (below) If anyone reading this needs the wiring and the fuse ID to there car please send there request here.

Can a cel scanner read an OBD2 scanner?

No. The CEL does not come on at all, and the scanner will not read. I have traced most of the wires, and I did not notice any break. It was just something that happened, all of a sudden. I also checked the fuses. helpful?

Where to find check engine light codes on a Lincoln?

When retrieving Lincoln check engine light codes with an OBD II scan tool, proceed as follows: 1. Connect scan tool to the 16-pin data link connector (DLC) located underneath the steering column. The connector may have a removable cover. 2. Turn the ignition on. 3.

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.

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.

Where is the fuse on ECM Batt 10amp?

I did find a location under the hood that says ecm batt 10Amp but there is no fuse there (it is location 51). It only has gold connectors only on one side of where the blades plug in, so it looks like just a spare socket. Just weird because all the other locations like that say not used.

What should I do if I Can’t Read my OBD code?

If you’re scanning your car’s computer for OBD (on-board diagnostic) codes and getting nothing in return, there are some things you should check before you give up and take your car to the shop.

What kind of plug do I need for OBD2 scanner?

The end of the cable will normally have a 16-pin plug that should give a perfect fit into the cars outlet. Turn on the ignition key or run the car, whichever is in the manual, and give time for the scanner to initialize.

When to turn OBD 2 scanner for I / m readiness?

You should then turn the OBD 2 scanner again for I/M readiness. This is important because in the event that your car goes for an inspection at the DMV or an independent station, the technician will normally test for I/M readiness using their own scan tool. You certainly won’t get a sticker if your car fails to pass the test.

What does a malfunction indicator light on OBD2 mean?

This light, in the OBD2 standard language, is also called a malfunction indicator light (MIL). When that light is on it means there is a certain sensor in the car that has sent an error message to the powertrain control module (PCM) which it can’t decode.

Can you fry a PCM through the OBD port?

Absolutely. If you hook a welder up and juice the PCM through the OBD with a gagillion amps, you will fry the electronics of the PCM through the OBD port. ( NOTE: Would you do this? Probably not on purpose, but it is possible.)

Why is my OBD2 scanner not communicating with my car?