Skip to content

Troubleshoots For Using an Autel Scanner OBD2 Code Reader, like AL419, AL519, AL619, ML629, etc.

When you use an OBD2 scanner, like Autel AL301, AL419, AL519, AL619, ML629, MD802, MD808 ... to diagnostic your vehicle, you might have bellow problems. Please check bellow instruction and it might be help.

Trouble one: Vehicle Linking Error?
*A communication error occurs if the scan tool fails to communicate with the vehicles ECU (Engine Control Unit).
You need to do the following to check up:

  1. Verify that the ignition is ON;
  2. Check if the scan tools OBD II connector is securely connected to the vehicles DLC;
  3. Verify that the vehicle is OBDII compliant;
  4. Turn the ignition off and wait for about 10 seconds. Turn the ignition back to on and continue the testing;
  5. Verify the control module is not defective.
OBD2 CABLE
Trouble two: Operating Error?
*If the scan tool freezes, then an exception occurs or the vehicles ECU (Engine Control Unit) is too slow to respond to requests. You need to do the following to reset the tool:
  1. Reset the scan tool;
  2. Turn the ignition off and wait for about 10 seconds;
  3. Turn the ignition back to on and continue the testing.

Trouble three: Scan tool doesn't power up?
*If the scan tool won't power up or operates incorrectly in any other way, you need to do the following to check up:
  1. Check if the scan tools OBD II connector is securely connected to the vehicles DLC;
  2. Check if the DLC pins are bent or broken;
  3. Clean the DLC pins if necessary;
  4. Check vehicle battery to make sure it is still good with at least 8.0 volts.
Previous article 2019 Good Tyre Pressure Sensors to recommend for Winter/Snow Tire Exchange
Next article Six Ways You Could be Killing Your Car!!

Latest Posts

  • Autel Maxicheck Pro: Funtions, Review & Price
    May 24, 2022

    Autel Maxicheck Pro: Funtions, Review & Price

    Autel MaxiCheck Pro Diagnostic Scanner is designed for car repair services. This is an ideal scanning tool for professional technicians and body shops servicing custom professional systems. The Maxicheck Pro Scanner performs services such as inspection and mileage reset. Reset...

    Read now
  • MS906BT
    May 23, 2022

    Autel MS906BT: Review & Price & FAQ [2022]

    Autel MS906BT is one of the most excellent vehicle diagnostic tools so far. It is suitable for DIY lovers and professional mechanics In this review, I will bring you the most detailed information on MS906BT.  Autel MS906BT Modern vehicles' regular maintenance is not...

    Read now
  • Launch VS Autel - How to Choose?
    May 21, 2022

    Launch VS Autel - How to Choose?

    A query we very generally get asked - Which brand is better? Launch or Autel? Launch and Autel are of the great manufacturers at the market. Both manufacturers provide very powerful, comprehensive, advanced, and reliable scan tools. Autel is widely...

    Read now