Q: Check Engine light codes

asked by on

My car has 3 Check Engine light codes on: p0440 p0441 and p0445. What can I do to solve the emissions issues?

If your Check Engine light has come on for emissions problems I would recommend having a knowledgable technician, such as one from YourMechanic, scan and interpret the trouble codes, and thoroughly examine the vehicle’s emissions system. All three of those codes are related to the vehicle’s evaporative emissions system. P0440 indicates a large leak in the EVAP system, P0441 indicates incorrect purge flow, and P0445 indicates a EVAP purge valve circuit short. 2 of the 3 codes are related to the purge valve, so I would first locate and test the purge valve, and then search for leaks from there.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Check Engine light codes

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: I have a 1988 Toyota celica and it looses rpm while idling and tries to die when letting off gas. Black smoke coming from exhaust.

You should have the fuel system checked to see if the fuel pressure is between 34 and 44 psi. If it is too high at idle then you need to replace the fuel regulator. If pressure is good then look...

Q: Q: Battery

Hello. I would need to know the model of your vehicle to be able to give you more information. From my experience with most GM vehicles a battery drain is caused by either caused by a failing ignition switch or...

Q: What other damage can a locked up front drivers side wheel bearing cause on a Dodge Dakota 4x4

The likelihood of concealed damage depends on the circumstances surrounding the failure. For example, if the wheel locked at 60 MPH, it is possible that the powertrain and axle experienced unusual high loading. Although the vehicle has a differential there...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...