When the check-engine light snaps on, it is not a suggestion, it is your car’s way of saying something in the powertrain or ...

Here are 2025's most popular questions and answers from The Journal's Car Doctor column, from rotating tires to oil changes.

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 ...

When the dreaded malfunction indicator light turns on, it’s not the end of the world. Here’s how to cope with an MIL! Whether you know a lot about cars or nothing about them, it's never fun to see the ...

Best offers 2005 Honda Crv Oxygen Sensor Engine For Honda Odyssey, Accord, Civic, Prelude - 10 Year Warranty Knock Sensor ...

Is your Mazda acting up – maybe rough idling, poor acceleration, or just throwing a check engine light? A faulty Mass Air ...

Your car's dashboard symbols generally fall under one of two categories: specific indicators with a single clear meaning and broad warnings with multiple potential causes. Specific indicators like the ...

It may cost you more in the long run. You’re driving along and suddenly your check engine light goes on. But nothing seems to have changed with the way your car is running. It’s OK to let it go for a ...

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 ...

When the check engine light comes on in a vehicle, it’s indicating that there is some issue with the car that should be checked out. It could be something minor, such as the gas cap not being screwed ...