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.

Can a Bluetooth diagnostic Cable read OBD codes?

The OBDII Bluetooth Car Diagnostic Cable is a must-have for any mechanic who makes home auto repairs. You can use this device with all OBD-2 compliant vehicles to diagnose problems with many different systems inside of the car. The cable can read both make-specific and general codes and uses an LED indicator for easy reading….

Can you do a diagnostic without a trouble code?

Throughout the years, more emission related systems and components have been incorporated to the list of computer monitored systems. Still, some performance and driveability problems can appear without the computer setting any DTC. So you need a different strategy to do a diagnostic without the help of a trouble code.

What should the PSI be on an auto expansion valve probe?

A gauge reading of less than 200 psi on the high side will be seen when this happens. When stuck closed, a higher than normal high side reading will be seen. Typically, this will be over 400 psi and climb until the high-pressure switch shuts down the system.

What kind of diagnostics does a Cadillac OBD-I have?

The DTC’s of some OBD-I cars are interpreted in different ways, however. Cadillac (gasoline) fuel-injected vehicles are equipped with actual on-board diagnostics, providing trouble codes, actuator tests and sensor data through the new digital Electronic Climate Control display.

How to test the ignition module on a Chevy Cavalier?

If you’ve been wondering how you can test your ignition control module (ICM) on your 2.2L Chevy Cavalier or Pontiac Sunfire? Well, you’ve come to the right place.

What causes a crank sensor to not start?

Now, if the NO START is caused by the ignition module or the crank sensor, usually the ignition coils will not fire any spark at all. Therefore, the second symptom that leads you on the path of a BAD ICM or crank sensor is: No spark at any of the ignition coils.

Can a bad ICM cause a crank sensor to go bad?

Therefore, the second symptom that leads you on the path of a BAD ICM or crank sensor is: No spark at any of the ignition coils. Of course, when it comes to Ignition System failures, this is not an absolute truth. These two components could display any number of behaviors when they go bad.

What does it mean when check engine light is on but no codes?

No code being generated on the reader does not mean the driver is in the clear. In fact, when the light is on, the odds are just as high that there has actually been something wrong for a while even if no code is generated.

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 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 does the OBD 2 scan show no codes?

The starter cranked the engine over, I had plenty of gas,and the battery is almost new. After getting the car towed home, I hooked up an OBD II Autoscanner. The scanner showed no codes, and said the car passed the scan test. I was expecting a sensor code, a fuel pressure code or an ignition coil code.

Why does my car scan show no codes?

The scanner showed no codes, and said the car passed the scan test. I was expecting a sensor code, a fuel pressure code or an ignition coil code. The car had done this once before – but the code reader had correctly shown a faulty crank sensor.

Can a code reader turn off the Check Engine light?

With a code reader you can easily clear codes and turn off the “check engine” light, but you will however not be able to check for readiness and may fail to get a sticker in case your vehicle finds itself at the DMV’s office.

Can a car scanner read both P0 and P1 codes?

There are certain types of faults in vehicles that will set a P0 code and not a P1 code or vice versa. Unless you’re able to read both codes it can be difficult for you to make the right diagnosis for your vehicle. Also, unlike code readers, scanners are capable of also displaying the readiness status of the car’s OBD2 system monitors.

How many OBD2 readiness monitors can be not ready?

For example, the US Environmental Protection Agency guidelines allow up to two monitors to be not ready for model year 1996 through 2000 vehicles. For 2001 and newer model year vehicles only single monitor status can be incomplete or not ready. How to get the monitors complete or “ready”?

Why is my OBD2 not connecting to YouTube?

These issues include an incompatible obd2 scan tool, bad fuses, damage in the circuit board, ECU, and failed computer. OBD-II…. Non connecting data Port Issue. *FIXED* This might help you! – YouTube OBD-II…. Non connecting data Port Issue. *FIXED* This might help you! If playback doesn’t begin shortly, try restarting your device.

Which is the best scanner for OBD2 not linking?

Innova 3040 Foxwell Scanner Foxwell NT301 FOXWELL NT510 Foxwell NT624 FOXWELL NT630 Actron Scanner Actron CP9690 Actron CP9680 Actron CP9670 Other Bluedriver OBD2 Bluetooth Scanner Konnwei KW808 Bafx 34t5 Professional automotive diagnostic scanner Floor Jack Arcan Craftsman 3 Ton Craftsman Motorcycle Hein Werner Torin Jacks Harbor Freight

What should I do if I have a trouble code on my car?

A trained eye can check for issues such as broken wires and loose connections. If a problem is found, the issue should be repaired and the code cleared. If nothing is discovered, check for technical service bulletins (TSBs). TSBs are recommended diagnostic and repair procedures put out by the vehicle manufacturer.

What to do if your can C Bus is not working?

Replace the wiring harness immediately and see if it solves your problem. The next thing to do is check your Can C Bus. Use your code reader to see if there are any codes that indicate trouble with the CAN C bus. Then, use a multimeter to check both the (+) and (-) circuits on your CAN C bus for shorts.

Why is the pulse brew button on my Bunn not working?

• The Pulse Brew Button has been pressed. During the brew, water flow will vary to properly steep tea or for stronger coffee. • The Sprayhead may be clogged, loose or the seal may be damaged. Please refer to Cleaning the Sprayhead.

Where can I get the OBD codes for my car?

You do this by plugging a scan tool into a computer-style port on your car (your repair manual will show you where it is) and downloading the codes. Then you can go to a site such as OBD-Codes.com and see what the codes translate into.

Why is my Sparky scan tool not communicating?

When this condition is encountered you generally end up at a screen that states that the module will not communicate. Not a big deal if you know your tool and realize you need to check those circuits. Unfortunately many times a technician is thrown off by this and starts looking for problems with the data communication lines.

How to read the OBD2 code on your car?

Here we introduce the guide to read OBD2 Codes using a mobile device-based tool: 1 Step 1: Locate your vehicle’s OBD port The OBD-II port is usually located under the dashboard, beneath the steering… 2 Step 2: Plug your OBD-II scan tool into the connector 3 Step 3: Pair your OBD-II Scanner with an App More

Why is my OBD2 scan not working properly?

But after conducting research online and speaking to different mechanics and technicians, I found out that a wide range of problems can cause it. These issues include an incompatible obd2 scan tool, bad fuses, damage in the circuit board, ECU, and failed computer.

Is it a diagnostic to connect a scan tool?

Connecting a scan tool and reading the codes is not a diagnostic. Telling a mechanic or a technician the symptoms and receiving some suggestions as to the cause in not a diagnostic. The surest way to throw money down the drain is to replace something based on the two above lines.

When did the OBD2 system first come out?

With a code reader or scanner, you can access one or more OBD2 codes that indicate the issues. OBD system started in the early 1980s with a simple function to turn on the malfunction indicator light or “idiot light” when it detects a malfunction.

Can a car stall if there is no DTC?

If your car’s computer hasn’t thrown any DTCs, you may want to check the following potential components or systems to find the fault. An engine can stall under different conditions, depending on the specific fault. For example, the engine may stall during acceleration, while idling, after reaching operating temperature, or stall intermittently.

How is DTCs used to diagnose car problems?

Since 1982, the On-Board Diagnostic (OBD) system has helped automotive technicians monitor and find problems with emission components or control systems that may have gone out of their normal operating parameters. A car’s computer uses DTCs to pinpoint a potential system’s fault.

What kind of meter do you use to read auto repair codes?

You can use any standard digital multimeter to read the codes. It can be a very low cost, simple meter. It only has to be able to measure 0 to 12 volts. You can use an Analog Voltmeter, however you need to make sure it has an internal resistance of at least 10K ohms to be safe.

Why do you need a jumper wire to flash a car code?

Using jumper wires to flash codes has been built in by the car manufacturers to ensure people without a Scan Tool or Code Reader can still diagnose the vehicle faults by reading the codes.