As a vital component of a vehicle’s emissions control system, oxygen sensors play a crucial role in engine performance and fuel efficiency. But what’s the typical cost to replace a failed O2 sensor?

pressure is low, if the oil needs changing, if the engine has a mechanical problem or if the engine has quit running (unless the fault is related to a key sensor that can also affects emissions). Many ...

This article applies to the Mercedes-Benz E-Class (2002-2009). The Mercedes-Benz E-Class oxygen sensor is the main component for the emission control system. When it's not working properly, the engine ...

This article applies to the Porsche 911 993 (1993-1998). The oxygen sensor in your Porsche 993 plays a very important role in how your car operates. This little gadget can cause many headaches when it ...

Oxygen sensors detect the amount of oxygen in the exhaust. Oxygen sensors usually don’t have a replacement schedule. A bad oxygen sensor can be diagnosed with a code reader or scan tool. A car’s ...

Maintenance is an essential part of owning a car. Whether it’s simple tasks like an oil change or bleeding your brakes, plenty of jobs are DIY-friendly and can save you the costs of taking your ...

It is a moral dilemma that many shops encounter on a regular basis. It starts when a good customer comes in with the check engine light ablaze. Running your usual diagnostics, you encounter a ...

If you are a proud Ford owner, you don’t ever want to deal with a Check Engine Light. Seeing the P1131 code can cause your heart to sink, but it might not be as worrisome as you think. The P1131 ...

This article applies to the Porsche 997 (2005-2012). Engine performance is all about a magical mixture known as Air:Fuel Ratio or AFR. The Porsche 997's engine control unit, or ECU, wants to manage ...

The oxygen sensors are a vital part of measuring the amount of oxygen in the gas. If there’s something wrong with the oxygen sensor, the Check Engine Light is sure to come on, which can be annoying.