P0174 Code (Symptoms, Causes, and How to Fix)

P0174 engine code

Combustion engines are not machines that you can tune perfectly and then expect to run that way forever. They need constant readjusting to run efficiently. Technology in modern cars works to make these small adjustments as you drive. Sometimes, even the most advanced systems cannot correct a problem that develops in your engine. When the … Read more

P0135 Code (Symptoms, Causes, and How to Fix)

P0135 engine code

Some oxygen sensors contain a heating circuit to reduce the time it takes them to reach operational temperature after the vehicle is started. The P0135 code is activated when the heating circuit in the air-to-fuel ratio sensor, also known as the front oxygen sensor in bank one, malfunctions. Code P0135 may also indicate a bad … Read more

5 Symptoms of a Bad Oxygen Sensor (and Replacement Cost)

bad O2 sensor symptoms

In this article we are going to go over a very important sensor in a car’s engine called the “oxygen sensor”, commonly referred to as an O2 sensor.  Afterwards, you should know the basic function, working principle, bad symptoms, and average replacement cost of an oxygen sensor. How an Oxygen Sensor Works The internal combustion … Read more

P2096 Code (Symptoms, Causes, and How to Fix)

P2096 engine code

Your vehicle’s air-to-fuel ratio is critical for your engine performance. If you don’t have the correct air-to-fuel ratio in your vehicle, you can seriously damage your engine. If an OBD2 scanner is indicating a P2096 code, it means there is a problem with your air-to-fuel ratio. Most modern engines have two different oxygen sensors that … Read more

P0138 Code (Symptoms, Causes, and How to Fix)

P0138 engine code

When your check engine light comes on, it can mean anything from a catastrophic issue with the motor itself to a loose sensor connection. That’s why it’s crucial to run the codes and see what’s going on underneath the hood. Code P0138 indicates an issue with the O2 sensor for Bank 1, Sensor 2. This … Read more

P0420 Code (Symptoms, Causes, and How to Fix)

P0420 engine code

As cars have developed, so has their impact on the environment. Earlier versions of cars pumped harmful gas in the form of exhaust into the air without regulation. A vehicle’s catalytic converter fixes that. The catalytic converter’s main job is to take pollutants from the engine’s combustion cycle and turn them into less harmful gases … Read more

P0171 Code (Symptoms, Causes, and How to Fix)

P0171 engine code

Your engine needs the right ratio of fuel to air to run efficiently. If there’s either too much or not enough, then your combustion engine will not work as well or efficiently as it’s supposed to. When there is too much air entering the chambers, your vehicle will store a P0171 code. A variety of … Read more