OBDII Doctor

Home OBDII Doctor Page 2
Welcome to the OBDII How To section of My Pro Street. Here we review check engine codes and how to diagnose, fix and erase engine light issues. When your check engine light is on, you won't be able to pass smog or your local emissions tests. Want to learn how to erase your OBDII check engine light? Tired of that annoying engine warning? Need to fix your trouble code? The OBDII DTC Doctor section is perfect for you.

What is the OBDII Check Engine Light exactly?

The blinking yellow light on your dash or vehicle instrument cluster isn't just annoying, it's a sign that there is something wrong. This is known as your OBDII check engine light, and it is your vehicle's way of notifying you that there's a potential issue. The OBDII system is known as the On Board Diagnostic System. It's part of your vehicle computer system that's come standard in vehicles since 1996. This diagnostic system can help you diagnose, troubleshoot and root cause the check engine light on your car or truck. obdii check engine light When you have a check engine light on, you won't be able to pass smog. In some extreme cases the vehicle may not even start. There are many check engine light problems that can affect your gas mileage and your vehicle functions. Good news is, with our OBDII How To guides and tech tips, we can help you diagnose and fix your check engine light problems. Believe it or not, troubleshooting your check engine light isn't hard to do. With the right OBDII scan tool, you can fix your vehicle without an expensive mechanic and erase your check engine light.

What is a OBDII scan tool?

Many times these are handheld scan tools that connect to your vehicle, there are also wireless units that can connect to your mobile device. With the right guide or DIY OBDII article, you can use these devices to read the alphanumeric codes in your diagnostic computer. The OBDII scan tool works as a gateway into your car in order to get to that information you need. Need more information on your check engine light? Want to erase a CEL? Our OBDII Doctor can help you with what you need. This section is also geared toward those who want to convert or modify the On-Board Diagnostic components of their vehicles. This can come in handy if you want to complete an engine swap project or just want to upgrade your older vehicle. OBDII Trouble Codes P0143 - O2 Sensor Circuit Low Voltage  P0145 – O2 Sensor Circuit Slow Response Trouble Code Guides :
  1. All B OBDII Codes Explained - Full listing of all SRS and B OBDII Codes
  2. All C OBDII Codes Explained - Full listing of all Chassis OBDII Codes
  3. All P OBDII Codes Explained - Full listing of all Powertrain OBDII Codes
Learn more by subscribing to My Pro Street today for all the latest How To Guides and tech tips.

Popular FAQ

How To Test a Chrysler Concorde Crank Sensor

The crank angle sensor is one of the most important sensors in your Chrysler Concorde. When your Concorde Crank Sensor starts to go bad, or...

How to Shop for Connecting Rods

Building your performance engine can be a long and drawn out process, and connecting rods are arguably the single most important factor. If you...
2027 Chevrolet Corvette Stingray, Grand Sport and Grand Sport X compared on a performance circuit

Which 2027 Corvette Should You Buy? The Grand Sport Looks Like the Sweet Spot

The 2027 Chevrolet Corvette lineup now stretches from a 200-mph Stingray to the 1,250-horsepower ZR1X, but the smartest enthusiast purchase may sit...

What is Compression Height

When you are building your project engine, there's a lot of math involved. One of the biggest calculations is compression height. That's especially true when...

JDM Engine Buying Guide – Getting the best deal

So you've saved up enough money to finally make the jump to the engine swap you've always dreamed about. You've got the ideal JDM...

FAQ – Spark Plugs 101

Here is a sampling of the top questions we are most commonly asked about spark plugs, spark plug gap, heat range, resistor plugs and...
Pioneer-style retro single-DIN receiver in a classic Japanese car dashboard, with matching box speakers shown beside it.

Pioneer’s Retro Stereo Comes to America—And Keeping Your Dashboard Normal Costs $500

Pioneer’s Heritage Collection brings a retro single-DIN receiver and matching box speakers to America. Here’s what the $799.98 combination offers older-car enthusiasts.

How To Aim Your Headlights

The headlights on your vehicle serve to illuminate the road and any dangers that may lie ahead, but are too often neglected or ignored...