What Is Error Code P0101?

If your OBD or OBD II code scanner is displaying error code P0101, it is reading a mass airflow sensor malfunction. Your car’s mass airflow sensor measures the amount, or mass, of air that enters the engine. Your car’s computers need this information to properly balance the fuel-to-air ratio since this allows them to dispense…

How to Choose the Best PCM for Your Ford Vehicle

In any car made for roughly the last 20 years – or longer, for some models – electronics are key to the vehicle’s operation. They make many adjustments on the fly, including changes to your fuel-to-air ratio, engine timing, and exactly when to shift. This provides far better fuel economy than older cars, while still…

What Is Error Code P0300?

The OBD-II P0300 code indicates that your engine has experienced multiple random misfires. If this is indeed the case, you’ve probably already noticed some changes in your car’s performance, as well as some rough engine operation, both while driving and while idle. But other than the occasional shudder, what does this mean for your car?…

7 Common ECM Failure Symptoms

These days, it’s impossible to maintain your car without a good understanding of its computer systems. Gone are the days of adjusting your timing belt or setting your own fuel-to-air ratio. Nowadays, those functions are controlled by three computers: Engine control module (ECM) Powertrain control module (PCM) Transmission control module (TCM). Today, we’re going to…

P0600 Code: What It Means and How to Fix It

So maybe your check engine light is on or your car isn’t starting smoothly. You’ve hooked it up to your friend’s OBD code scanner, and your car is displaying a P0600 code. What on earth does that mean? Don’t worry. We’ll explain what a P0600 code means for your vehicle, how you can diagnose the…

How to Test a PCM

Modern cars rely on computers to manage their various systems. For example, when was the last time you or someone you know had to adjust their car’s timing? Unless you’re a classic car collector or you’re old enough to carry an AARP card, the answer is probably “never”. There’s a reason for that; we have…

7 Common PCM Failure Symptoms

Not too long ago, all of our cars’ systems were manual. From timing to tire pressure, you had to keep an eye on every aspect of your vehicle, and it was routine for mechanics to give your car a “tune-up” along with your oil change.  Ever wonder why that isn’t necessary anymore? The reason is…

P0700 Code: What It Means and How to Fix It

Every year, cars require more and more computers to meet safety, fuel, and efficiency requirements. The good news is that our cars are more environmentally friendly than ever. They also perform better. Any car from the 1950s drives like a slow hog compared a modern economy car. But when those computer systems fail, they can…

How To Know If You Need a Jeep PCM Replacement

The Powertrain Control Module (PCM) is the computer that controls most of your Jeep’s essential systems. The PCM controls the engine timing, the fuel to air ratio, the transmission, and the anti-lock brakes, along with dozens of other smaller functions. When your PCM fails, it can cause you to lose fuel efficiency and possibly fail…

P0603 Code: What It Means and How to Fix It

A P0603 code is one of many universal error codes that your car may generate. If you see this code on your code scanner, it could mean anything from the minor inconvenience of replacing your battery to serious powertrain problems like mistimed shifting. In this article, we’ll discuss possible causes of the P0603 code, how…