OBDII Archives - Tomorrows Technician
OBDII Connector

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

OBD II System and Emissions: Forcing Vehicle Monitors For Calibration

Some vehicles have readiness issues when it comes to setting all the OBD II monitors.

ECM No Communication Issues

The source of the problem could be software, electrical or mechanical.

Reprogramming ADAS Procedures

As a vehicle ages, the J2534 programming becomes even more important to the vehicle’s ADAS operation.

More Than Codes: Finding The Story Behind An Emission Code

If you want to diagnose a emissions-related problem, confirm the fix, and know when the car leaves the shop the job will be completed, this article is for you.

Fuel Trims!

Understanding fuel trims is the gateway to diagnosing common emissions problems. However, before we begin to use this information, specific criteria must be met in order for the PCM to gather accurate information.

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 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.