Your car’s OBD-II port can read live data, freeze frame info, boost pressure, oxygen sensor data, mileage, and check engine trouble codes.

We earn commissions from purchases you make using links in our articles. Learn more. Problems with catalytic converters are one of the most common causes of check engine lights, but they’re extremely ...

The world of car diagnostics has changed a lot over the last 50 years. Back in the '70s and earlier, a mechanic's most valuable diagnostic tools were usually their eyes and ears. You could figure out ...

16:34, Wed, Nov 12, 2025 Updated: 16:37, Wed, Nov 12, 2025 Martin Lewis has repeatedly urged O2 customers to give the network 'a bloody nose' by ditching it following its announcement of mid-contract ...

P0420 is a well-recognized error code within the automotive industry, notorious for its persistence. Luckily, this article is designed to guide you through ...

There are few things more distracting when driving than a check engine light, or CEL. The CEL is a vague, catch-all light that indicates there is an error somewhere ...

If you’ve had your eye on a new Apple Watch Series 10, now’s the day to finally get one. Not only is it $100 off, starting at just $299 for the 42mm model, but the blood-oxygen sensor is finally ...

In a surprise Thursday announcement, Apple says that it is bringing the blood oxygen sensor feature back to the Apple Watch Series 9 and newer. The returning feature will be part of an iOS 18.6.1 and ...

We may receive a commission on purchases made from links. Modern cars are designed to be more efficient and eco-friendly than ever. Automakers build vehicles with a wealth of advanced features to not ...

Don't let failing oxygen sensors compromise your engine's performance. O2 sensors are critical to emissions control on your car, SUV or truck. As the name implies, the O2 sensor (also called an ...

As an experienced service advisor, I saw the P0420 “check engine” light code hundreds of times. This fault code indicates that your car’s catalyst system isn’t performing as efficiently as it should.