Codes P0440, P0441 and P0446

THEMAILMAN

MEMBER
2002 CHEVROLET PRIZM
1.8L
4 CYL
2WD
AUTOMATIC
213,000 MILES

Hello. I checked the codes on the car yesterday just to see if anything new popped up. It's had a couple that I've been trying to address for a bit. Three new Eval codes showed up as pending. P0440, P0441, and P0446. I kind of sort of over-filled the tank the day before yesterday. Could overfilling the tank have caused those codes to set, or should I start chasing?

1 Reply

SQM

MECHANIC
6,383 POSTS

Hello,

The EVAP codes can get triggered due to any leak within the system. That is primarily what those code that you have.

Here is a helpful guide:

https://www.2carpros.com/articles/evap-system-code-repair

The best course of action would be to take a look at the possibilities and find the issue.
I have attached the troubleshooting guide for the codes P0440, P0441 and P0446 below.
Follow those steps, as it can help you determine the problem.

Let me know of any questions.
Thank you.

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