Q: In my vehicle, the check engine light comes on and then goes off and it is now back on. I had a test done at local auto-parts store that showed a code of PO138. They told me this indicates a ...

Without a diagnostic tool, it's challenging to determine what is wrong with your car and whether to keep driving when a solid ...

The dashboard of your car provides plenty of useful information while you're driving, from the speed you're traveling at to the amount of gas left in your tank. The check engine light is another ...

Fact: Check engine lights lead to gray hairs and sleepless nights. Just kidding, they’re important warning signs that help you maintain your ride’s health and well-being. But what happens when that ...

Problems with catalytic converters are one of the most common causes of check engine lights, but they’re extremely exp ...

I have a 99 Mustang. About a year or so ago, my check engine light (hereby known as the CEL) went on. I took it to my local shop, who charged my $75 and said they fixed it. 2 days later, it comes back ...

April is Car Care Awareness Month — and also National Canine Fitness Month, International Guitar Month and National Soft Pretzel Month, among many others — and the folks at CarMD are back with their ...

I had a test done at local auto-parts store that showed a code of PO138. They told me this indicates a problem with the oxygen sensor. I replaced the oxygen sensor and the light never went out. I ...