any one had this a problem before ,i used obd2 to read the check engine error p0441,p0442 and p0446. the car is running so fare fine.
Nov 2, 2006 at 1:42 AM
2004 Toyota Matrix EVAP Codes
2004 TOYOTA
RKESBIA
- MEMBER
- 3 POSTS
Dear Rkesbia,
You don't give the code meanings. I cross referenced the codes with a different model and all the codes lead to the Evap system malfuntion. You didn't give the miles on the vehicle so assuming the car is fairly new and still under warranty. Check that the gas cap is tight and has no cracks in it. Clear the codes and if they come back check with the dealer to see if it is still under warranty and have them fix it. ( emmission controls are warranty 5 years )If not then you will have to trouble shoot the Evap system. Start with the gas cap then the hoses wires etc. Hope this helps
Backyardmechanic :D
You don't give the code meanings. I cross referenced the codes with a different model and all the codes lead to the Evap system malfuntion. You didn't give the miles on the vehicle so assuming the car is fairly new and still under warranty. Check that the gas cap is tight and has no cracks in it. Clear the codes and if they come back check with the dealer to see if it is still under warranty and have them fix it. ( emmission controls are warranty 5 years )If not then you will have to trouble shoot the Evap system. Start with the gas cap then the hoses wires etc. Hope this helps
Backyardmechanic :D
Nov 7, 2006 at 11:24 PM
I do know for a fact that there has been a Technical Service Bulletin regarding certain evap codes which require th PCM to be reflashed or replaced, as well as the catalytic convertor and O2 sensors. Unfortunately, it's only covered by the manufacturer if it happens before I believe 5 years or 80,000 miles.
May 31, 2009 at 5:23 AM
Suggested Repair
Confirm the gas cap is tight and not cracked, then clear the codes. If P0441, P0442, or P0446 return, check emissions warranty coverage and inspect the EVAP system, starting with the gas cap, hoses, and wiring.
Conversation Summary
The owner of a 2004 Toyota Matrix reports check-engine codes P0441, P0442, and P0446, while the car continues to run fine. The expert identifies an EVAP-system fault and recommends checking the gas cap, clearing the codes, and using the emissions warranty if they return; otherwise, inspect EVAP hoses and wiring. Another comment mentions a possible EVAP-related TSB involving a PCM reflash or replacement and related parts, subject to age and mileage limits.