Why does the Check Engine light come on on a Toyota Tundra?
Oxygen sensors can change the way that your Tundra’s engine runs. Most of the time, the check engine light will come on. It’s a good thing that the check engine light would come on, as there is more than one oxygen sensor, and they can be difficult to get to and test.
What causes bad O2 sensor in Toyota Tundra?
While a rough running engine can be a sign of a bad oxygen sensor, it is often a sign of a misfire as well. Often enough, there won’t be any noticeable signs of a bad oxygen sensor. You’ll go to get an emissions check done, and your Tundra fails the test.
What does the oxygen sensor on a Toyota do?
If you notice a drop in your Toyota’s fuel economy, the vehicle runs rough and the exhaust smells strong or the engine is hard to start, you may have a faulty oxygen sensor. The oxygen, or O2, sensor reads the percentage of oxygen in the exhaust coming from the engine and sends this information to the computer.
Where are the sensors located on a Toyota Tundra?
The front sensors are located before the catalytic converter, usually on the exhaust manifold and the rear sensors come after the catalytic converter. All of them are in the exhaust plumbing between the motor and the tailpipe, under the truck. Figure 1. Tundra cluster with the CEL lit.
How does the engine code work on a Toyota Tundra?
When the light turns on, the ECM stores an engine code or “trouble code” in its memory that identifies as the issue, whether it’s a sensor or a failing engine part. This code is learn with an electrical probe tool that is used by our Toyota auto repair mechanics at Nalley Toyota of Roswell.
Can a bad oxygen sensor cause a check engine light to come on?
The trouble codes associated with the OBDII scan will reveal which sensor is at fault and why it is bad (at least what the computer thinks is wrong). It is very rare for there to be a problem with an oxygen sensor, and not have the check engine light come on. Here are the most common symptoms of a bad oxygen sensor in your Tundra: