If you build engines, tune cars, or even just like mashing your foot on the throttle with conviction, you’ve probably heard ...

Q:Hi James. I keep having an oxygen sensor fault code for a lean exhaust with my '97 Corvette. I've taken the vehicle to the dealer several times but the problem keeps recurring. I would like to try ...

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 ...

P2238 is a Bank 1 O2 sensor which is easily fixed with a new sensor, however P0420 is related to faulty or substandard coating on the catalytic converter and firmware upgrade.