Your Questions Answered By Our Experts
What can be causing P0420 engine error and poor gas/mileage?
There are a number of things that can cause a P0420 engine error code, including: -A faulty oxygen sensor -A clogged or restricted catalytic converter -An exhaust leak before the catalytic converter -A problem with the fuel injectors -A problem with the air/fuel mixture If you're experiencing poor gas mileage, it could be due to one of these issues. If you think your catalytic converter may be the problem, have it checked by a mechanic to see if it needs to be replaced. You may also want to check for exhaust leaks before taking your car in for service.
What Others are Asking
What is the meaning of OBD-II code P0420, and what is the possible cause of this code being generated?
The OBD-II code P0420 refers to a malfunction in the catalytic converter's efficiency. This code is generated when the Engine Control Module (ECM) detects a discrepancy between the air-fuel ratio sens...
What causes the P0420 code to appear in a Nissan Altima?
The P0420 code is a diagnostic trouble code that indicates a problem with the catalytic converter's efficiency. This code may appear in a Nissan Altima due to various reasons: a. Faulty catalytic con...
Why does my car's engine falter and cause the car to jerk when I'm driving at low speeds?
When you're driving your car, and the engine suddenly falters, it can be a cause for concern. After all, it's not usually a good sign when your car starts jerking around. However, there are a few pote...
Why do I have a vibration when I turn left at highway speeds?
When driving at highway speeds, you may notice a vibration that seems to come from the front end of the car. This is most likely due to an issue with the tires or wheels. Uneven tire wear can cause a ...
My car shakes uncontrollably whenever I drive above 60 mph, but the shaking stops when I ease off the gas pedal. What is the cause?
The trembling of your car at higher speeds may be a sign of wheel imbalance or poor tire alignment. This can occur when the weight on the tires is not evenly distributed, causing them to vibrate as th...