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OBDII Connectors

OBDII connectors serve as the main communication point between the technician and the vehicle.

Watch Now: OBD Zero Diagnostics in an OBDII World

Follow along as we discuss the latest OBDII engine management systems. Sponsored by Summit Racing Equipment.

Livestream: OBD Zero Diagnostics In An OBDII World

Join us at 2PM EST on Friday, February 25 for this live event sponsored by Summit Racing.

VIDEO: Why Is Using The OBDII Port For TPMS Relearns More Efficient?

Andrew Markel answers a reader question about TPMS relearn procedures and how a dedicated TPMS tool that is able to communicate with the TPMS module through the OBDII can help streamline the process.

OBDII Port Diagnostics

When it comes to data bus diagnostics, a lot can be done with just an OBDII connector breakout box, meter and a scope.

Top 10 OBDII Codes

If you value your shop time, want to speed up your diagnostic time, and be able to bring more work into the service bays, check out this program!

Top 10 OBDII Codes Quick Quiz

Can you diagnose OBDII DTC’s in less than 10 minutes? Take this four question quiz to test your diagnostic strategies when tackling the most common OBD II codes.

Catalytic Converter Replacement

Converters must be certified and labeled with the correct codes that are stamped into the shell when replacing.

Mercedes Ignition Coil Pack Diagnostics

Replacing a single coil might not be the best approach to curing an engine of a chronic misfire.

Deciphering An Engine Misfire Code

Many changing factors must be met to pass a misfire monitor.