We’ve scanned over 113875 Lexus RX300s with the FIXD OBD2 scanner and app. These are the 5 most common reasons for a check engine light in your Lexus RX300.
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|P0330||LOW – Continued driving for a short period of time is okay|
|P0440||LOW – Continued driving for a short period of time is okay||There is a malfunction in the EVAP system|
|P0325||LOW – Continued driving for a short period of time is okay|
|P0446||LOW – Continued driving for a short period of time is okay||The EVAP system’s vent control valve is not opening or closing properly.|
|P0300||LOW – Continued driving for a short period of time is okay||Two or more cylinders are experiencing misfires|
When To Expect These Codes With Your Lexus RX300
- P0330 usually appears after 192365 miles
- P0440 usually appears after 175281 miles
- P0325 usually appears after 182202 miles
- P0446 usually appears after 175448 miles
- P0300 usually appears after 166383 miles
Check Your Gas Cap
One of the most common reasons for a check engine light in your RX300 is also the easiest problem to fix. A loose gas cap is often the reason the check engine light turns on. This happens because the engine detects a leak in the evaporative emissions system, which exists when the gas cap isn’t tightened until it clicks. It’s easy, and it’s free!
What Should I Do If the Check Engine Light Is On in My RX300?
There are many issues that can trigger the RX300 engine light, from a loose gas cap to major engine issues. If this light turns on, don’t panic. Follow these steps to figure out what the problem is and get it to a trusted repair shop for inspection as soon as possible.
What the Check Engine Light Means
Your RX300’s check engine light is part of the onboard diagnostics system (OBD2). All gas-powered cars and trucks made since 1996, plus diesel cars and trucks since 2008, have a diagnostic system to manage the engine and monitor emission system performance. It alerts the driver to any problems by turning on the Check Engine Light on your dashboard. Special tools known as OBD2 scanners or car code readers can access diagnostic information from this system to find out what’s wrong with your car and how serious the problem really is.
How to Read Your RX300’s Check Engine Light
There are a few ways you can read the diagnostic trouble code stored in your car’s computer.
3) Get the FIXD car scanner to read your own codes. There are many OBD2 scanners you can buy that will read codes and provide other engine information anytime you want. FIXD is able to translate any RX300’s check engine light trouble code into plain English directly on your smartphone.
How the FIXD Check Engine Scanner Works
Understand Your CEL
FIXD instantly translates over 7,000 error codes into simple terms right on your phone.
See How Serious Your CEL Is
Learn if your problem is serious or not, and whether it’s safe to keep on driving.
Get Maintenance Alerts
FIXD can automatically alert you when your RX300 is due for an oil change and other routine maintenance, based on your specific model and its mileage.
Monitor the Health of Your RX300
Is It Safe to Drive with My Check Engine Light On?
If the light is blinking, you should stop as soon as it’s safe to do so. This indicates a serious problem, such as a misfire, that is occurring right then. It’s also good to check for low oil or overheating. If your RX300’s check engine light is red, you should stop driving immediately.
If your RX300 experiences driveability issues, such as reduced power, slow down and take it easy on the engine to avoid making the problem worse.
How Can I Reset the Check Engine Light in My RX300?
If you have resolved the problem, you may want to clear the codes that triggered your RX300 engine light. If you reset the light, drive, and it doesn’t turn back on, your problem is fixed.
The easiest way to reset the check engine light on your RX300 is with FIXD. While auto parts stores will typically read your codes for free, they will not reset the light for you, and shops may charge more than $100 to do this.
In the FIXD app, you can reset the light anytime you want for free. After performing the engine scan, go to the Details page and click the “Clear Engine Light” button. The light will turn off, and any codes stored inside your RX300’s computer will be cleared. If the light turns back on after a few miles of driving, the issue likely still exists.