Q: I have a 2007 Toyota RAV4 I bought from a large car dealer. After two months the "Check engine" light came on. The Toyota dealer said it was a defective oxygen sensor, which I had replaced. The ...

I'm the original owner of a 2002 Toyota RAV4. It has about 135,000 miles on it. It's the best car I've ever owned. A few months ago, my check-engine light went on. The car was running fine, but after ...

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 emissions system needs attention. I see it as an early warning system that ...

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 ...

It glows on your car’s dashboard and instantly ignites terror and loathing in the hearts and wallets of drivers; the dreaded “Check Engine” warning light. For ...

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 ...

In order for our cars to carry us to and from our various destinations reliably, all the parts must work together smoothly. The fuel and air intake systems provide the ingredients necessary to power ...

When your vehicle's check engine light (CEL) comes on, it's often a sign that something needs attention. But with over 20,000 parts working together in your car — many important for normal operation — ...

The costs of buying a new or used car have climbed in recent years, and so has the average repair bill. If a vehicle purchase or major repair isn’t in the cards (or budget), maintaining the health of ...

You’re driving along in your car or truck and suddenly a yellow light illuminates on your dash telling you to check or service your engine. If you’re like most car owners, you have little idea about ...