Tag: oxygen sensor

DIY

How to Test an O2 Sensor

Driving with a faulty O2 sensor may trigger the check engine light, cause performance problems, and eventually damage your catalytic converter. But how would you know if it is really...Read more

OBD-II Trouble Codes

P0131: O2 Sensor Circuit Low Voltage (Bank 1, Sensor 1)

Oxygen sensors measure the amount of oxygen in the exhaust stream. Your car’s primary computer, which is often referred to as the powertrain control module (PCM), uses the signal from...Read more

Features

Fix Your Car Right the First Time: Why You Should Always Consult a Repair Manual

There’s a common misconception that anyone can pick up a wrench, jump right in, and fix a car. While that may have been closer to the truth 40 years ago,...Read more

OBD-II Trouble Codes

P0137 Code: Oxygen Sensor Circuit Low Voltage (Bank 1, Sensor 2)

OBD-II codes help you find out what’s wrong with your car. If your scan tool is showing a P0137 trouble code, this points to a problem with one of your...Read more

OBD-II Trouble Codes

P0132: Oxygen Sensor Circuit High Voltage (Bank 1, Sensor 1)

Decreased fuel efficiency, a rough-running engine, and an illuminated check engine light can point to a lot of issues. However, if your OBD-II scanner stores the P0132 code, there is...Read more

OBD-II Trouble Codes

P0135 Code: Heated O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 1)

A rough-running engine can point to a lot of issues. But if after running your OBD-II scanner, you see the P0135 code come up, your oxygen (O2) sensor could be...Read more

OBD-II Trouble Codes

P0136 Code: O2 Sensor Circuit (Bank 1, Sensor 2)

The performance of your vehicle’s engine relies heavily on maintaining the right air-to-fuel mix for combustion. The engine control module (ECM) determines the proper ratio by collecting data from different...Read more

OBD-II Trouble Codes

P0155 Code: Oxygen Sensor Heater Circuit Malfunction (Bank 2, Sensor 1)

If you drive a fairly modern vehicle, it might be equipped with a heated oxygen sensor (HO2) instead of a regular oxygen sensor. The former contains a heating element that...Read more

OBD-II Trouble Codes

P0134: O2 Sensor Circuit No Activity Detected (Bank 1, Sensor 1)

Poor fuel economy, a failed emissions test, and engine problems—these are symptoms that a lot of automotive issues share. Run your OBD-II scanner to narrow down the problem. If it...Read more

OBD-II Trouble Codes

P2096 Code: Post Catalyst Fuel Trim System Too Lean (Bank 1)

There is an ideal ratio for the mixture of air and fuel that your car’s engine burns in its combustion chambers. An excessive amount of oxygen in the mixture means...Read more

OBD-II Trouble Codes

P0138 Code: O2 Sensor Circuit High Voltage (Bank 1, Sensor 2)

Is your vehicle triggering a P0138 trouble code on your OBD-II scanner? If so, read on to find out what this code means, what the symptoms and possible causes are,...Read more

OBD-II Trouble Codes

P0172 Code: Fuel System Too Rich (Bank 1)

Is your Check Engine Light illuminated? Are you experiencing engine misfires? Or perhaps you’re noticing an unusual lack of engine power when you drive? While these symptoms are not exclusive...Read more

Features

10 Ways to Make Your Car More Eco-Friendly

It might be hard to find a silver lining in the situation our world is facing today, but here’s some good news: since social distancing and stay-at-home orders have been...Read more

OBD-II Trouble Codes

P0141 Code: Oxygen Sensor Heater Circuit Malfunction (Bank 1, Sensor 2)

There are around 11,000 different trouble codes in the most recent OBD-II index. So what makes the P0141 code stand out from the rest? This article will cover the details,...Read more

OBD-II Trouble Codes

P0174 Code: System Too Lean (Cylinder Bank 2)

While the P0174 OBD-II trouble code is not manufacturer-specific and is considered a generic powertrain code, it can be more common in certain car makes than others. More specifically, a...Read more

OBD-II Trouble Codes

P0420 Code: Catalyst System Efficiency Below Threshold (Bank 1)

There are many issues that could trigger the Check Engine Light to illuminate. However, if you use an OBD-II scanner and get a P0420 code, you may be having issues...Read more

OBD-II Trouble Codes

P0430 Code: Catalyst System Efficiency Below Threshold (Bank 2)

Your vehicle starts belching smoke. The engine might stall, lose power, and idles roughly. Finally, the Check Engine Light switches on. When you plug the OBD-II scanner into the connector,...Read more

OBD-II Trouble Codes

P0171 Code: System Too Lean (Bank 1)

For combustion engines to function smoothly, it needs to have a mixture of 14.7 parts air to 1 part fuel (14.7:1). To maintain this, the engine control module (ECM) constantly...Read more

DIY

How to Tell If the Catalytic Converter is Clogged

More than 90% of cars today are powered by internal combustion engines (ICE)—and until electric vehicles completely take over, this type of engine is likely here to stay. However, it...Read more

Features

Better Together: A Guide to Buying Parts in Pairs

Is your car looking a little worse for wear? Or do you know someone who’s been saving up for ages to fix their ride? Show them some love this Valentine’s...Read more

DIY

How to Pass an Emissions Test: 7 Tips That May Help

Note: Please check your local and state laws regarding exemptions and coverage of car emissions testing in your area. Emission testing, or smog check, ensures your car meets the emission...Read more

DIY

Bad Catalytic Converter Symptoms: Signs to Watch Out For

When I was 20 years old, I owned a Pontiac Trans Am. Of course, it was bright red because, at that age, I wanted something flashy. The car also had...Read more

Features

Fact or Fiction: Can Catalytic Converters Catch Fire?

In 2018, approximately 90,000 acres of the Sierra National Forest near the Yosemite were burned to the ground. The Ferguson fire burned for over a month before it was fully...Read more

DIY

Common Questions Asked by Motorists

Q: Every once in a while I can hear a squeak or metal grinding noise coming out of the front wheels. It happens mostly at low speeds while turning. When...Read more

Guides

Emission Control Systems

The need to control the emissions from automobiles gave rise to the computerization of the automobile. Hydrocarbons, carbon monoxide and oxides of nitrogen are created during the combustion process and...Read more

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